Phoebe vs quintuplet

Phoebe and quintuplet both are nouns.

Word	Noun	Adjective	Verb	Adverb
Phoebe	Yes	No	No	No
quintuplet	Yes	No	No	No

As nouns, Phoebe and quintuplet are synonyms defined as:

Phoebe and quintuplet: the cardinal number that is the sum of four and one

Other synonyms of Phoebe include 5, cinque, fin, five, fivesome, Little Phoebe, pentad, quint, quintet, V.

Phoebe (noun)	quintuplet (noun)
(Greek mythology) a Titaness who became identified with Artemis as goddess of the Moon	a set of five similar things considered as a unit
the cardinal number that is the sum of four and one	one of five children born at the same time from the same pregnancy
	the cardinal number that is the sum of four and one