sulk vs mood

sulk and mood both are nouns.

Word	Noun	Adjective	Verb	Adverb
sulk	Yes	No	Yes	No
mood	Yes	No	No	No

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

Other hypernyms of sulk include humor, humour, temper.

sulk (noun)	mood (noun)
a mood or display of sullen aloofness or withdrawal	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

sulk (verb)	mood (verb)
be in a huff and display one's displeasure