descant vs warble

descant and warble both are nouns.

Word	Noun	Adjective	Verb	Adverb
descant	Yes	No	Yes	No
warble	Yes	No	Yes	No

As verbs, descant and warble are synonyms defined as:

Other synonyms of descant include yodel.

descant (noun)	warble (noun)
a decorative musical accompaniment (often improvised) added above a basic melody	a lumpy abscess under the hide of domestic mammals caused by larvae of a botfly or warble fly

descant (verb)	warble (verb)
sing by changing register; sing by yodeling	sing or play with trills, alternating with the half note above or below
talk at great length about something of one's interest	sing by changing register; sing by yodeling
sing in descant