Hottentot's bread vine vs tortoise plant

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

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

As nouns, Hottentot's bread vine and tortoise plant are synonyms defined as:

Hottentot's bread vine and tortoise plant: South African vine having a massive rootstock covered with deeply fissured bark

Other synonyms of Hottentot's bread vine include Dioscorea elephantipes, elephant's-foot, Hottentot bread vine.

Hottentot's bread vine (noun)	tortoise plant (noun)
South African vine having a massive rootstock covered with deeply fissured bark	South African vine having a massive rootstock covered with deeply fissured bark