synopsis vs precis

synopsis and precis both are nouns.

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

As nouns, synopsis and precis are synonyms defined as:

synopsis and precis: a sketchy summary of the main points of an argument or theory

Other synonyms of synopsis include abstract, outline.

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

synopsis (verb)	precis (verb)
	make a summary (of)