rhinovirus vs picornavirus

rhinovirus and picornavirus both are nouns.

Word	Noun	Adjective	Verb	Adverb
rhinovirus	Yes	No	No	No
picornavirus	Yes	No	No	No

As nouns, picornavirus is a hypernym of rhinovirus; that is, picornavirus is a word with a broader meaning than rhinovirus:

rhinovirus: any of a group of picornaviruses that are responsible for many upper respiratory infections
picornavirus: a group of single-strand RNA viruses with a protein coat

rhinovirus (noun)	picornavirus (noun)
any of a group of picornaviruses that are responsible for many upper respiratory infections	a group of single-strand RNA viruses with a protein coat