black-billed cuckoo vs cuckoo

black-billed cuckoo and cuckoo both are nouns.

Word	Noun	Adjective	Verb	Adverb
black-billed cuckoo	Yes	No	No	No
cuckoo	Yes	No	Yes	No

As nouns, cuckoo is a hypernym of black-billed cuckoo; that is, cuckoo is a word with a broader meaning than black-billed cuckoo:

black-billed cuckoo: North American cuckoo; builds a nest and rears its own young
cuckoo: any of numerous European and North American birds having pointed wings and a long tail

black-billed cuckoo (noun)	cuckoo (noun)
North American cuckoo; builds a nest and rears its own young	any of numerous European and North American birds having pointed wings and a long tail
	a man who is a stupid incompetent fool

black-billed cuckoo (verb)	cuckoo (verb)
	repeat monotonously, like a cuckoo repeats his call