summary vs sum-up

summary and sum-up both are nouns.

Word	Noun	Adjective	Verb	Adverb
summary	Yes	Yes	No	No
sum-up	Yes	No	No	No

As nouns, summary and sum-up are synonyms defined as:

summary and sum-up: a brief statement that presents the main points in a concise form

summary (noun)	sum-up (noun)
a brief statement that presents the main points in a concise form	a brief statement that presents the main points in a concise form

summary (adjective)	sum-up (adjective)
briefly giving the gist of something
performed speedily and without formality