mocking vs taunting

mocking is not a noun while taunting is a noun.

Word	Noun	Adjective	Verb	Adverb
mocking	No	Yes	No	No
taunting	Yes	Yes	No	No

As adjectives, mocking and taunting are synonyms defined as:

Other synonyms of mocking include derisive, gibelike, jeering.

mocking (noun)	taunting (noun)
	aggravation by deriding or mocking or criticizing

mocking (adjective)	taunting (adjective)
abusing vocally; expressing contempt or ridicule	abusing vocally; expressing contempt or ridicule
playfully vexing (especially by ridicule)