It isn't useful to list every possible synonym because they don't always mean exactly the same thing. Context matters greatly, so it would be misleading to accept synonyms that can only be used in specific situations.

Unfortunately, it's also not technically possible to include a large number of synonyms.

If you know a synonym to the study item but it isn't accepted as an answer, that's great! You will get to increase your vocabulary by learning another word for the same thing.

In general, we always aim to choose the most neutral and general expression as the study item.