herpes varicella zoster virus vs herpes varicella zoster

herpes varicella zoster virus and herpes varicella zoster both are nouns.

Word	Noun	Adjective	Verb	Adverb
herpes varicella zoster virus	Yes	No	No	No
herpes varicella zoster	Yes	No	No	No

As nouns, herpes varicella zoster virus and herpes varicella zoster are synonyms defined as:

herpes varicella zoster virus and herpes varicella zoster: a herpes virus that causes chickenpox and shingles

herpes varicella zoster virus (noun)	herpes varicella zoster (noun)
a herpes virus that causes chickenpox and shingles	a herpes virus that causes chickenpox and shingles