bird vs hoot

bird and hoot both are nouns.

As nouns, bird and hoot are synonyms defined as:

Other synonyms of bird include raspberry, hiss, razz, razzing, snort, Bronx cheer, boo.

bird (noun)	hoot (noun)
warm-blooded egg-laying vertebrates characterized by feathers and forelimbs modified as wings	a loud raucous cry (as of an owl)
the flesh of a bird or fowl (wild or domestic) used as food	a cry or noise made to express displeasure or contempt
informal terms for a (young) woman	something of little value
a cry or noise made to express displeasure or contempt
badminton equipment consisting of a ball of cork or rubber with a crown of feathers

bird (verb)	hoot (verb)
watch and study birds in their natural habitat	to utter a loud clamorous shout
	utter the characteristic sound of owls