zoster vs shingles

zoster and shingles both are nouns.

Word	Noun	Adjective	Verb	Adverb
zoster	Yes	No	No	No
shingles	Yes	No	No	No

As nouns, zoster and shingles are synonyms defined as:

zoster and shingles: eruptions along a nerve path often accompanied by severe neuralgia

Other synonyms of zoster include herpes zoster.

zoster (noun)	shingles (noun)
eruptions along a nerve path often accompanied by severe neuralgia	eruptions along a nerve path often accompanied by severe neuralgia