narrow-leaved plantain vs Plantago lanceolata

narrow-leaved plantain and Plantago lanceolata both are nouns.

Word	Noun	Adjective	Verb	Adverb
narrow-leaved plantain	Yes	No	No	No
Plantago lanceolata	Yes	No	No	No

As nouns, narrow-leaved plantain and Plantago lanceolata are synonyms defined as:

narrow-leaved plantain and Plantago lanceolata: an Old World plantain with long narrow ribbed leaves widely established in temperate regions

Other synonyms of narrow-leaved plantain include buckthorn, English plantain, ribgrass, ribwort, ripple-grass.

narrow-leaved plantain (noun)	Plantago lanceolata (noun)
an Old World plantain with long narrow ribbed leaves widely established in temperate regions	an Old World plantain with long narrow ribbed leaves widely established in temperate regions