Lathyrus odoratus vs sweet pea

Lathyrus odoratus and sweet pea both are nouns.

Word	Noun	Adjective	Verb	Adverb
Lathyrus odoratus	Yes	No	No	No
sweet pea	Yes	No	No	No

As nouns, Lathyrus odoratus and sweet pea are synonyms defined as:

Lathyrus odoratus and sweet pea: climbing garden plant having fragrant pastel-colored flowers

Other synonyms of Lathyrus odoratus include sweetpea.

Lathyrus odoratus (noun)	sweet pea (noun)
climbing garden plant having fragrant pastel-colored flowers	climbing garden plant having fragrant pastel-colored flowers