Vesta vs 4 Vesta

Vesta and 4 Vesta both are nouns.

Word	Noun	Adjective	Verb	Adverb
Vesta	Yes	No	No	No
4 Vesta	Yes	No	No	No

As nouns, Vesta and 4 Vesta are synonyms defined as:

Vesta and 4 Vesta: the brightest asteroid but the fourth to be discovered

Vesta (noun)	4 Vesta (noun)
the brightest asteroid but the fourth to be discovered	the brightest asteroid but the fourth to be discovered
(Roman mythology) goddess of the hearth and its fire whose flame was tended by vestal virgins; counterpart of Greek Hestia