song vs animal communication

song and animal communication both are nouns.

Word	Noun	Adjective	Verb	Adverb
song	Yes	No	No	No
animal communication	Yes	No	No	No

As nouns, animal communication is a hypernym of song; that is, animal communication is a word with a broader meaning than song:

song (noun)	animal communication (noun)
the act of singing	communication between animals (of the same species)
a short musical composition with words
the characteristic sound produced by a bird
a distinctive or characteristic sound
a very small sum