Portulaca grandiflora vs sun plant

Portulaca grandiflora and sun plant both are nouns.

Word	Noun	Adjective	Verb	Adverb
Portulaca grandiflora	Yes	No	No	No
sun plant	Yes	No	No	No

As nouns, Portulaca grandiflora and sun plant are synonyms defined as:

Portulaca grandiflora and sun plant: widely cultivated in many varieties for its fleshy moss-like foliage and profusion of brightly colored flowers

Other synonyms of Portulaca grandiflora include rose moss.

Portulaca grandiflora (noun)	sun plant (noun)
widely cultivated in many varieties for its fleshy moss-like foliage and profusion of brightly colored flowers	widely cultivated in many varieties for its fleshy moss-like foliage and profusion of brightly colored flowers