taunting vs mocking

taunting is a noun but mocking is not a noun.

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

As adjectives, taunting and mocking are synonyms defined as:

Other synonyms of taunting include derisive, gibelike, jeering.

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

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