fun vs humor

fun and humor both are nouns.

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

As nouns, humor is a hyponym of fun; that is, humor is a word with a more specific, narrower meaning than fun:

As nouns, humor is a hypernym of fun; that is, humor is a word with a broader meaning than fun:

fun: verbal wit or mockery (often at another's expense but not to be taken seriously)
humor: a message whose ingenuity or verbal skill or incongruity has the power to evoke laughter

Other hypernyms of fun include humour, wit, witticism, wittiness.

fun (noun)	humor (noun)
activities that are enjoyable or amusing	the quality of being funny
violent and excited activity	the trait of appreciating (and being able to express) the humorous
a disposition to find (or make) causes for amusement	the liquid parts of the body
verbal wit or mockery (often at another's expense but not to be taken seriously)	(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

fun (verb)	humor (verb)
	put into a good mood