Vocabulary

Table of contents

This page provides short and comprehensive definitions to lay the foundations of Sustainability. Please do not hesitate to contact us if you have additional needs.

More detailed descriptions or debated topics are covered in our Blog.

Use the buttons below to navigate through the different sections.

General definitions


The basics of Sustainability.

Quantification


Some quantification tools used in Sustainability.

Concepts


Concepts related to sustainability to go further.

Methodology 


Key methodological topics influencing our perception.

Metrics & Reporting


Key metrics and reporting principles and frameworks.

Standards, regulations & frameworks


Related standards, regulations and frameworks.

General definitions


Sustainability

The ability to maintain processes, systems, or practices over the long term without depleting resources or harming future generations.

Sustainable Development

Defined by the 1987 Brundtland Report as “meeting the needs of the present without compromising the ability of future generations to meet their own needs”.

Greenwashing 

The deceptive practice of making false, misleading, or unsubstantiated claims about the environmental benefits of a product, service, or company.

The 3 pillars of Sustainability  

Sustainability is often described through three interconnected dimensions: Environment; Social; Economic.

Sustainable Development Goals (SDGs)

A set of 17 global objectives defined by the United Nations to promote prosperity while protecting the planet.

ESG (Environmental, Social, Governance)

Framework for assessing corporate sustainability performance.

IPCC

The Intergovernmental Panel on Climate Change is an intergovernmental body providing scientific information on Climate Change.

Environmental Sustainability

Focuses on protecting ecosystems, biodiversity, and natural resources.

Economic Sustainability

Promotes long-term prosperity without exhausting resources.

Social Sustainability

Ensures equity, justice, and well-being for communities.

Planetary Boundaries

A scientific framework that identifies nine critical Earth-system processes (such as climate change, biodiversity loss, and freshwater use) and sets quantitative limits within which humanity can operate safely. Crossing these boundaries increases the risk of destabilizing the planet’s systems.

Concepts


Adaptation 

Adjustments in systems or behaviors to reduce harm or exploit opportunities arising from environmental or climate change.

Biodiversity

The variety of life on Earth, plants, animals, and ecosystems, essential for resilience and balance in nature.

Decarbonization

Reduction of carbon intensity in processes, products, or systems.

Carbon Neutrality

Achieving a balance between emitting carbon and absorbing or offsetting it, so that net emissions equal zero.

Circular Economy

An economic model that minimizes waste by reusing, repairing, and recycling materials to keep resources in use for as long as possible.

Climate Mitigation 

Actions to reduce or prevent greenhouse gas emissions.

Renewable Energy

Energy from sources that naturally replenish, such as solar, wind, hydro, and geothermal.

Resilience

The ability of systems, ecological, social, or economic, to adapt and recover from shocks or stresses.

Metrics & Reporting


Sustainability Reporting Frameworks

Structured guidelines (e.g., GRI, SASB, TCFD) that help organizations disclose sustainability performance in a standardized way.

Integrated Reporting 

Combines financial and non-financial (sustainability) data into a single holistic report.

Indicators & KPIs (Key Performance Indicators)

Quantitative or qualitative measures used to track progress toward sustainability goals (e.g., energy intensity, water use per unit).

Double Materiality

A reporting principle requiring companies to assess and disclose sustainability information from two perspectives: how their business activities impact the environment and society (inside-out), and how external sustainability issues (like climate change) present financial risks or opportunities to the business (outside-in).

Greenhouse Gas (GHG)

Gases like carbon dioxide and methane that trap heat in the atmosphere and drive climate change.

Global Warming Potential (GWP)

A factor used to convert different greenhouse gases into CO₂-equivalents based on their warming effect over a set time horizon (commonly 100 years).

Quantification


Carbon Footprint

Quantitative measurement of greenhouse gas emissions associated with a product, activity, or organization.

Life Cycle Assessment (LCA)

A standardized method to evaluate the environmental impacts of a product or service across its entire life cycle (from raw material extraction to disposal).

Environmental Product Declaration (EPD)

Third‑party verified document summarizing LCA results according to ISO 14025 and product category rules (PCRs).

Material Flow Analysis (MFA)

Tracks the flow of materials through a system to identify inefficiencies and opportunities for circularity.

Water Footprint

Measures freshwater use, distinguishing between blue (surface/groundwater), green (rainwater), and grey (polluted water).

Methodology


Allocation Rules 

Procedures for distributing environmental burdens among co‑products (mass, energy, economic).

Attributional LCA (A‑LCA)

Life cycle assessment approach that allocates average environmental burdens to a product system, describing what is rather than what would change.

Biogenic Carbon

Carbon that originates from biological sources, such as plants, animals, or organic waste. In sustainability assessments, it is distinguished from fossil carbon because it is part of the short-term carbon cycle (absorbed and released naturally), whereas fossil carbon adds long-term emissions when burned.

Consequential LCA (C‑LCA)

LCA approach modeling the environmental consequences of decisions, focusing on marginal changes and market-mediated effects.

Dynamic LCA

Time‑dependent LCA modeling that accounts for temporal variations in emissions, degradation, or energy mix.

Functional Unit

Quantified performance of a product system used as the reference for LCA comparisons (e.g., “1 kWh delivered”, “1 km driven”).

Mass Balance

Mass Balance in Chain of Custody is a method of tracking the proportion of sustainable input materials (e.g., bio-based, recycled, or responsibly sourced) as they are mixed with conventional inputs during production. The share is then allocated to outputs for the purpose of sustainability claims.

System Boundaries

The defined limits of a study or analysis (e.g., in Life Cycle Assessment). They specify which processes, inputs, and outputs are included or excluded — for example, whether the analysis covers “cradle-to-gate” (production only) or “cradle-to-grave” (full life cycle including disposal).

Standards, regulations & frameworks


ISO 14040

Environmental management - Life cycle assessment - Principles and framework. 

ISO 14040

ISO 14044

Environmental management - Life cycle assessment - Requirements and guidelines. 

ISO 14044

ISO 14025

Environmental labels and declarations - Type III environmental declarations - Principles and procedures.

ISO 14025

EN 15804

Sustainability of construction work - Environmental product declarations - Core rules for the product category of construction products.

EN 15804

EN 15978 

Sustainability of construction works - Assessment of environmental performance of buildings - Calculation method.

EN 15978

LEED (USGBC)

A global green building certification system evaluating energy, water, materials, indoor air quality, and innovation. LCA contributes to material impact credits.

LEED

BREEAM

A leading sustainability assessment method scoring buildings on environmental performance, health, materials, and management. Integrates EPDs and LCA for material selection.

BREEAM

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