Hyacinthus candicans vs summer hyacinth

Hyacinthus candicans and summer hyacinth both are nouns.

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

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

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

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

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