bargain vs song

bargain and song both are nouns.

Word	Noun	Adjective	Verb	Adverb
bargain	Yes	No	Yes	No
song	Yes	No	No	No

As nouns, song is a hyponym of bargain; that is, song is a word with a more specific, narrower meaning than bargain:

Other hyponyms of bargain include travel bargain.

bargain (noun)	song (noun)
an agreement between parties (usually arrived at after discussion) fixing obligations of each	the act of singing
an advantageous purchase	a short musical composition with words
	the characteristic sound produced by a bird
	a distinctive or characteristic sound
	a very small sum

bargain (verb)	song (verb)
come to terms; arrive at an agreement
negotiate the terms of an exchange