tra-la vs chorus

tra-la and chorus both are nouns.

Word	Noun	Adjective	Verb	Adverb
tra-la	Yes	No	No	No
chorus	Yes	No	Yes	No

As nouns, chorus is a hypernym of tra-la; that is, chorus is a word with a broader meaning than tra-la:

Other hypernyms of tra-la include refrain.

tra-la (noun)	chorus (noun)
a set of nonsensical syllables used while humming a refrain	the part of a song where a soloist is joined by a group of singers
	any utterance produced simultaneously by a group
	a group of people assembled to sing together
	a body of dancers or singers who perform together
	a company of actors who comment (by speaking or singing in unison) on the action in a classical Greek play

tra-la (verb)	chorus (verb)
	utter in unison
	sing in a choir