Vocab Group 1-3 Test no.3 Query

Vocab Group 1-3 Test no.3 ,

Question number 37, where we have to match 2 synonyms,

There were few options such as libel, calumny, didactic etc. While libel and calumny are direct synonyms, I chose didactic and calumny… And when I looked up on google, obloquy is a common synonym for both didactic and calumny…

Can there be such a case on the GRE? I am afraid it might be difficult to really hard to remember the direct synonyms…