cumulate vs amass

cumulate and amass both are verbs.

Word	Noun	Adjective	Verb	Adverb
cumulate	No	No	Yes	No
amass	No	No	Yes	No

As verbs, cumulate and amass are synonyms defined as:

Other synonyms of cumulate include accumulate, conglomerate, gather, pile up.

cumulate (verb)	amass (verb)
increase in amount by collecting or gathering	increase in amount by collecting or gathering
	get or gather together