polyoma vs polyoma virus

polyoma and polyoma virus both are nouns.

Word	Noun	Adjective	Verb	Adverb
polyoma	Yes	No	No	No
polyoma virus	Yes	No	No	No

As nouns, polyoma and polyoma virus are synonyms defined as:

polyoma and polyoma virus: a virus that can initiate various kinds of tumors in mice

polyoma (noun)	polyoma virus (noun)
a virus that can initiate various kinds of tumors in mice	a virus that can initiate various kinds of tumors in mice