brochure vs folder

brochure and folder both are nouns.

Word	Noun	Adjective	Verb	Adverb
brochure	Yes	No	No	No
folder	Yes	No	No	No

As nouns, brochure and folder are synonyms defined as:

Other synonyms of brochure include booklet, leaflet, pamphlet.

brochure (noun)	folder (noun)
a small book usually having a paper cover	covering that is folded over to protect the contents
	a small book usually having a paper cover