ribgrass vs Plantago lanceolata

ribgrass and Plantago lanceolata both are nouns.

Word	Noun	Adjective	Verb	Adverb
ribgrass	Yes	No	No	No
Plantago lanceolata	Yes	No	No	No

As nouns, ribgrass and Plantago lanceolata are synonyms defined as:

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

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

ribgrass (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