They were not allowed to play Beethoven because it was German music.
Rotoscoping is an animation technique that animators use to trace over motion picture footage, frame by frame, to produce realistic action. ... This device was eventually replaced by computers, but the process is still called rotoscoping.
Synonyms help us connect unknown words with known words. For example, one may not know the meaning of the word "nefarious" when used in this context: "The offense was more nefarious than previously thought." If we replace "nefarious" with "evil" or "wretched" the meaning is more comprehensible to those who don't know the meaning of "nefarious": The offense was more evil (wretched) than previously thought."
I hope this helps, I used nefarious as a somewhat uncommon term to better illustrate my point, and to explain why we use synonyms to learn new words. Simply put, synonyms bridge us to the unknown using the known as solid ground build from.