Language Pairs
A language pair consists of a source language and a target language. A language pair has direction: English to French is not the same as French to English.
Specifying language pairs for a translation memory (TM)
A translation memory (TM) can have an indefinite number of language pairs. In SDL Trados GroupShare projects, you specify the language pairs (and their language resource settings) separately for each TM, under TM settings.
Language pair settings for a project
The language pair settings for each project specify the TMs and the termbases used in a project and are the link between the project and the project's TMs, termbases, and automated translation settings.
Under language resources, you can also specify the language pair settings that Trados GroupShare projects use where there is no TM.