humor vs gratify

humor is a noun but gratify is not a noun.

Word	Noun	Adjective	Verb	Adverb
humor	Yes	No	Yes	No
gratify	No	No	Yes	No

As verbs, gratify is a hypernym of humor; that is, gratify is a word with a broader meaning than humor:

Other hypernyms of humor include indulge, pander.

humor (noun)	gratify (noun)
the quality of being funny
the trait of appreciating (and being able to express) the humorous
the liquid parts of the body
(Middle Ages) one of the four fluids in the body whose balance was believed to determine your emotional and physical state
a message whose ingenuity or verbal skill or incongruity has the power to evoke laughter
a characteristic (habitual or relatively temporary) state of feeling

humor (verb)	gratify (verb)
put into a good mood	yield (to); give satisfaction to
	make happy or satisfied