mocking vs derisive

mocking and derisive both are adjectives.

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

As adjectives, mocking and derisive are synonyms defined as:

Other synonyms of mocking include gibelike, jeering, taunting.

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