figure of speech vs megahit

figure of speech and megahit both are nouns.

Word	Noun	Adjective	Verb	Adverb
figure of speech	Yes	No	No	No
megahit	Yes	No	No	No

figure of speech (noun)	megahit (noun)
language used in a figurative or nonliteral sense	an unusually successful hit with widespread popularity and huge sales (especially a movie or play or recording or novel)