assemble vs clump

assemble is not a noun while clump is a noun.

Word	Noun	Adjective	Verb	Adverb
assemble	No	No	Yes	No
clump	Yes	No	Yes	No

As verbs, clump is a hyponym of assemble; that is, clump is a word with a more specific, narrower meaning than assemble:

assemble (noun)	clump (noun)
	a heavy dull sound (as made by impact of heavy objects)
	a grouping of a number of similar things
	a compact mass

assemble (verb)	clump (verb)
create by putting components or members together	gather or cause to gather into a cluster
collect in one place	walk clumsily
get people together	come together as in a cluster or flock
	make or move along with a sound as of a horse's hooves striking the ground