rotavirus vs reovirus

rotavirus and reovirus both are nouns.

Word	Noun	Adjective	Verb	Adverb
rotavirus	Yes	No	No	No
reovirus	Yes	No	No	No

As nouns, reovirus is a hypernym of rotavirus; that is, reovirus is a word with a broader meaning than rotavirus:

rotavirus: the reovirus causing infant enteritis
reovirus: any of a group of non-arboviruses including the rotavirus causing infant enteritis

rotavirus (noun)	reovirus (noun)
the reovirus causing infant enteritis	any of a group of non-arboviruses including the rotavirus causing infant enteritis