cluster vs clump

cluster and clump both are nouns.

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

As nouns, cluster and clump are synonyms defined as:

Other synonyms of cluster include bunch, clustering.

As verbs, cluster and clump are synonyms defined as:

Other synonyms of cluster include bunch, bundle.

As verbs, cluster and clump are synonyms defined as:

Other synonyms of cluster include constellate, flock.

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

cluster (verb)	clump (verb)
gather or cause to gather into a cluster	gather or cause to gather into a cluster
come together as in a cluster or flock	walk clumsily
	come together as in a cluster or flock
	make or move along with a sound as of a horse's hooves striking the ground