song vs bell-like call

song and bell-like call both are nouns.

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

As nouns, bell-like call is a hyponym of song; that is, bell-like call is a word with a more specific, narrower meaning than song:

Other hyponyms of song include two-note call.

song (noun)	bell-like call (noun)
the act of singing	a birdcall that resembles the tone of a bell
a short musical composition with words
the characteristic sound produced by a bird
a distinctive or characteristic sound
a very small sum