Hottentot's bread vs Hottentot's bread vine

Hottentot's bread and Hottentot's bread vine both are nouns.

Word	Noun	Adjective	Verb	Adverb
Hottentot's bread	Yes	No	No	No
Hottentot's bread vine	Yes	No	No	No

Hottentot's bread (noun)	Hottentot's bread vine (noun)
thick edible rootstock of elephant's-foot	South African vine having a massive rootstock covered with deeply fissured bark