variola minor vs variola minor virus

variola minor and variola minor virus both are nouns.

Word	Noun	Adjective	Verb	Adverb
variola minor	Yes	No	No	No
variola minor virus	Yes	No	No	No

As nouns, variola minor and variola minor virus are synonyms defined as:

variola minor and variola minor virus: a type of smallpox virus that has a fatality rate of about 1 percent

variola minor (noun)	variola minor virus (noun)
a type of smallpox virus that has a fatality rate of about 1 percent	a type of smallpox virus that has a fatality rate of about 1 percent
a mild form of smallpox caused by a less virulent form of the virus