bell-like call vs birdcall

bell-like call and birdcall both are nouns.

Word	Noun	Adjective	Verb	Adverb
bell-like call	Yes	No	No	No
birdcall	Yes	No	No	No

As nouns, birdcall is a hypernym of bell-like call; that is, birdcall is a word with a broader meaning than bell-like call:

Other hypernyms of bell-like call include birdsong, call, song.

bell-like call (noun)	birdcall (noun)
a birdcall that resembles the tone of a bell	a device for imitating a birdcall
	the characteristic sound produced by a bird