bird vs call

bird and call both are nouns.

As nouns, call is a hypernym of bird; that is, call is a word with a broader meaning than bird:

Other hypernyms of bird include cry, outcry, shout, vociferation, yell.

bird (noun)	call (noun)
warm-blooded egg-laying vertebrates characterized by feathers and forelimbs modified as wings	a method of contacting a person by phone
the flesh of a bird or fowl (wild or domestic) used as food	a loud utterance; often in protest or opposition
informal terms for a (young) woman	a demand
a cry or noise made to express displeasure or contempt	the characteristic sound produced by a bird
badminton equipment consisting of a ball of cork or rubber with a crown of feathers	a brief social visit
	a demand by a broker that a customer deposit enough to bring his margin up to the minimum requirement
	a demand for a show of hands in a card game
	a request
	an instruction that interrupts the program being executed
	a visit in an official or professional capacity
	(sports) the decision made by an umpire or referee
	the option to buy a given stock (or stock index or commodity future) at a given price before a given date

bird (verb)	call (verb)
watch and study birds in their natural habitat	assign a specified (usually proper) name to
	ascribe a quality to or give a name of a common noun that reflects a quality
	get or try to get into communication (with someone) by telephone
	utter a sudden loud cry
	order, request, or command to come
	pay a brief visit
	call a meeting; invite or command to meet
	read aloud to check for omissions or absentees
	send a message or attempt to reach someone by radio, phone, etc.; make a signal to in order to transmit a message
	utter a characteristic note or cry
	stop or postpone because of adverse conditions, such as bad weather
	greet, as with a prescribed form, title, or name
	make a stop in a harbour
	demand payment of (a loan)
	make a demand, as for a card or a suit or a show of hands
	give the calls (to the dancers) for a square dance
	indicate a decision in regard to
	make a prediction about; tell in advance
	present for redemption before maturation
	challenge (somebody) to make good on a statement; charge with or censure for an offense
	declare in the capacity of an umpire or referee
	lure by imitating the characteristic call of an animal
	order or request or give a command for
	order, summon, or request for a specific duty or activity, work, role
	utter in a loud voice or announce
	challenge the sincerity or truthfulness of
	consider or regard as being
	rouse somebody from sleep with a call