mocking vs teasing

mocking is not a noun while teasing is a noun.

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

As adjectives, mocking and teasing are synonyms defined as:

Other synonyms of mocking include quizzical.

mocking (noun)	teasing (noun)
	the act of harassing someone playfully or maliciously (especially by ridicule); provoking someone with persistent annoyances
	playful vexation
	the act of removing tangles from you hair with a comb

mocking (adjective)	teasing (adjective)
abusing vocally; expressing contempt or ridicule	causing irritation or annoyance
playfully vexing (especially by ridicule)	playfully vexing (especially by ridicule)
	arousing sexual desire without intending to satisfy it