Translation in english to come... In the mean time, the glossary is in french 

Professional qualification
Professional qualification is the ability of a person to exercise a trade or a specific position.

In the broad sense, quality is the "way of being", good or bad, of a thing or a person. In common parlance, quality tends to refer to what makes something above average.

A quota is a fixed percentage, which can be imposed or authorized; it results in a quantification allocated to or a distribution between one or more actors.

A quantity is anything that can be counted or measured. Other meaning: A quantity designates a large number, a multitude.