cape hyacinth vs Hyacinthus candicans

cape hyacinth and Hyacinthus candicans both are nouns.

Word	Noun	Adjective	Verb	Adverb
cape hyacinth	Yes	No	No	No
Hyacinthus candicans	Yes	No	No	No

As nouns, cape hyacinth and Hyacinthus candicans are synonyms defined as:

cape hyacinth and Hyacinthus candicans: southern African herb with white bell-shaped flowers

Other synonyms of cape hyacinth include Galtonia candicans, summer hyacinth.

cape hyacinth (noun)	Hyacinthus candicans (noun)
southern African herb with white bell-shaped flowers	southern African herb with white bell-shaped flowers