If you know a synonym to the study item but it isn't accepted as a correct answer, that's great! You will get to increase your vocabulary by learning another word for the same thing.
In the basic-level materials, we aim to choose as the answer an expression that is as neutral and common as possible, but at more advanced levels the target word may sometimes be a rarer one on purpose.
If you have a good word in mind that you would like us to add as a synonym in the exercise, please send your idea to us at info@worddive.com