clump vs thumping

clump and thumping both are nouns.

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

As nouns, clump and thumping are synonyms defined as:

clump and thumping: a heavy dull sound (as made by impact of heavy objects)

Other synonyms of clump include clunk, thud, thump.

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

clump (adjective)	thumping (adjective)
	(used informally) very large

clump (verb)	thumping (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