climbing onion vs Bowiea volubilis

climbing onion and Bowiea volubilis both are nouns.

Word	Noun	Adjective	Verb	Adverb
climbing onion	Yes	No	No	No
Bowiea volubilis	Yes	No	No	No

As nouns, climbing onion and Bowiea volubilis are synonyms defined as:

climbing onion and Bowiea volubilis: much-branched leafless twining South African herb cultivated as an ornamental for its bright green stems growing from large aboveground bulbs

climbing onion (noun)	Bowiea volubilis (noun)
much-branched leafless twining South African herb cultivated as an ornamental for its bright green stems growing from large aboveground bulbs	much-branched leafless twining South African herb cultivated as an ornamental for its bright green stems growing from large aboveground bulbs