clunking vs clippety-clop

clunking and clippety-clop both are nouns.

Word	Noun	Adjective	Verb	Adverb
clunking	Yes	No	No	No
clippety-clop	Yes	No	No	No

As nouns, clunking and clippety-clop are synonyms defined as:

clunking and clippety-clop: the sound of a horse's hoofs hitting on a hard surface

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

clunking (noun)	clippety-clop (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