pellitory vs pellitory-of-Spain

pellitory and pellitory-of-Spain both are nouns.

Word	Noun	Adjective	Verb	Adverb
pellitory	Yes	No	No	No
pellitory-of-Spain	Yes	No	No	No

As nouns, pellitory and pellitory-of-Spain are synonyms defined as:

pellitory and pellitory-of-Spain: a small Mediterranean plant containing a volatile oil once used to relieve toothache

Other synonyms of pellitory include Anacyclus pyrethrum.

pellitory (noun)	pellitory-of-Spain (noun)
a small Mediterranean plant containing a volatile oil once used to relieve toothache	a small Mediterranean plant containing a volatile oil once used to relieve toothache
herb that grows in crevices having long narrow leaves and small pink apetalous flowers