clump vs clustering

clump and clustering both are nouns.

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

As nouns, clump and clustering are synonyms defined as:

Other synonyms of clump include bunch, cluster.

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

clump (verb)	clustering (verb)
gather or cause to gather into a cluster
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