yam plant vs vine

yam plant and vine both are nouns.

Word	Noun	Adjective	Verb	Adverb
yam plant	Yes	No	No	No
vine	Yes	No	No	No

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

yam plant: any of a number of tropical vines of the genus Dioscorea many having edible tuberous roots
vine: a plant with a weak stem that derives support from climbing, twining, or creeping along a surface

yam plant (noun)	vine (noun)
any of a number of tropical vines of the genus Dioscorea many having edible tuberous roots	a plant with a weak stem that derives support from climbing, twining, or creeping along a surface