Plantago lanceolata vs ribgrass

Plantago lanceolata and ribgrass both are nouns.

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

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

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

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

Plantago lanceolata (noun)	ribgrass (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