ill humour vs mood

ill humour and mood both are nouns.

Word	Noun	Adjective	Verb	Adverb
ill humour	Yes	No	No	No
mood	Yes	No	No	No

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

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

ill humour (noun)	mood (noun)
an angry and disagreeable mood	a characteristic (habitual or relatively temporary) state of feeling
	verb inflections that express how the action or state is conceived by the speaker
	the prevailing psychological state