clunking vs clumping

clunking and clumping both are nouns.

Word	Noun	Adjective	Verb	Adverb
clunking	Yes	No	No	No
clumping	Yes	No	No	No

As nouns, clunking and clumping are synonyms defined as:

clunking and clumping: the sound of a horse's hoofs hitting on a hard surface

Other synonyms of clunking include clip-clop, clippety-clop, clop, clopping.

clunking (noun)	clumping (noun)
the sound of a horse's hoofs hitting on a hard surface	the sound of a horse's hoofs hitting on a hard surface