sulk vs brood

sulk and brood both are nouns.

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

As verbs, sulk and brood are synonyms defined as:

Other synonyms of sulk include pout.

As verbs, brood is a hyponym of sulk; that is, brood is a word with a more specific, narrower meaning than sulk:

Other hyponyms of sulk include grizzle, stew.

sulk (noun)	brood (noun)
a mood or display of sullen aloofness or withdrawal	the young of an animal cared for at one time

sulk (verb)	brood (verb)
be in a huff and display one's displeasure	sit on (eggs)
	think moodily or anxiously about something
	be in a huff; be silent or sullen
	be in a huff and display one's displeasure
	hang over, as of something threatening, dark, or menacing