eighth note vs quaver

eighth note and quaver both are nouns.

Word	Noun	Adjective	Verb	Adverb
eighth note	Yes	No	No	No
quaver	Yes	No	Yes	No

As nouns, eighth note and quaver are synonyms defined as:

eighth note and quaver: a musical note having the time value of an eighth of a whole note

eighth note (noun)	quaver (noun)
a musical note having the time value of an eighth of a whole note	a musical note having the time value of an eighth of a whole note
	a tremulous sound

eighth note (verb)	quaver (verb)
	sing or play with trills, alternating with the half note above or below
	give off unsteady sounds, alternating in amplitude or frequency