challenging vs provocative

challenging and provocative both are adjectives.

Word	Noun	Adjective	Verb	Adverb
challenging	No	Yes	No	No
provocative	No	Yes	No	No

challenging (adjective)	provocative (adjective)
requiring full use of your abilities or resources	serving or tending to provoke, excite, or stimulate; stimulating discussion or exciting controversy
disturbingly provocative	intentionally arousing sexual desire
stimulating interest or thought