Dioscorea elephantipes vs vine

Dioscorea elephantipes and vine both are nouns.

Word	Noun	Adjective	Verb	Adverb
Dioscorea elephantipes	Yes	No	No	No
vine	Yes	No	No	No

As nouns, vine is a hypernym of Dioscorea elephantipes; that is, vine is a word with a broader meaning than Dioscorea elephantipes:

Dioscorea elephantipes: South African vine having a massive rootstock covered with deeply fissured bark
vine: a plant with a weak stem that derives support from climbing, twining, or creeping along a surface

Dioscorea elephantipes (noun)	vine (noun)
South African vine having a massive rootstock covered with deeply fissured bark	a plant with a weak stem that derives support from climbing, twining, or creeping along a surface