apercu vs synopsis

apercu and synopsis both are nouns.

Word	Noun	Adjective	Verb	Adverb
apercu	Yes	No	No	No
synopsis	Yes	No	No	No

As nouns, synopsis is a hypernym of apercu; that is, synopsis is a word with a broader meaning than apercu:

Other hypernyms of apercu include abstract, outline, precis.

apercu (noun)	synopsis (noun)
a short synopsis	a sketchy summary of the main points of an argument or theory