ill humor vs humor

ill humor and humor both are nouns.

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

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

Other hypernyms of ill humor include humour, mood, temper.

ill humor (noun)	humor (noun)
an angry and disagreeable mood	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

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