Glossaries are indeed the best way to set terminology requirements.

Each project in Crowdin has an automatically created glossary.

You can find the list of glossaries at the organization level under the Glossaries tab. Alternatively, open the project settings, go to the Glossaries tab, find the glossary you need, click the three dots next to it, and select Edit. On the Glossary page, click Add concept, then define a term in all languages where the required terminology should be used.

A concept is an entity that unites all terms referring to the same idea or object. It includes a description to explain what the concept means. A term is how we call that concept in a specific language. One concept can have multiple terms per language — for example, a preferred term, a short form, or even deprecated variants.

To ensure translators follow the terminology recommendations, make sure to enable the Consistent Terminology QA check in the Quality Assurance Settings of your project. This way, you or a linguist would either see a warning indicator for inconsistent terms on the project’s dashboard or, if strict QA checks are enforced, prevent translators from submitting translations that don’t follow the terminology rules.