# Copula

*Quant & Pricing — Finicade finance glossary*

A mathematical tool for stitching individual distributions into a joint one, capturing how variables move together in the tails. The Gaussian copula's failure to model that link helped fuel the 2008 crisis.

**Also known as:** gaussian-copula

**Related terms:** [Correlation](https://finicade.com/glossary/correlation), [Tranche](https://finicade.com/glossary/tranche), [Fat Tails](https://finicade.com/glossary/fat-tails)

**Taught in:** Quant Quest — Credit Modelling

Source: https://finicade.com/glossary/copula