breed vs brood

breed and brood both are nouns.

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

breed (noun)	brood (noun)
a special type	the young of an animal cared for at one time
a special variety of domesticated animals within a species

breed (verb)	brood (verb)
have young (animals) or reproduce (organisms)	sit on (eggs)
copulate with a female, used especially of horses	think moodily or anxiously about something
cause to procreate (animals)	be in a huff; be silent or sullen
call forth	be in a huff and display one's displeasure
	hang over, as of something threatening, dark, or menacing