brood vs brooder

brood and brooder both are nouns.

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

brood (noun)	brooder (noun)
the young of an animal cared for at one time	apparatus consisting of a box designed to maintain a constant temperature by the use of a thermostat; used for chicks or premature infants

brood (verb)	brooder (verb)
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