wild yam vs Dioscorea paniculata

wild yam and Dioscorea paniculata both are nouns.

Word	Noun	Adjective	Verb	Adverb
wild yam	Yes	No	No	No
Dioscorea paniculata	Yes	No	No	No

As nouns, wild yam and Dioscorea paniculata are synonyms defined as:

wild yam and Dioscorea paniculata: having a rhizome formerly dried and used to treat rheumatism or liver disorders

wild yam (noun)	Dioscorea paniculata (noun)
having a rhizome formerly dried and used to treat rheumatism or liver disorders	having a rhizome formerly dried and used to treat rheumatism or liver disorders