spearmint vs Mentha spicata

spearmint and Mentha spicata both are nouns.

Word	Noun	Adjective	Verb	Adverb
spearmint	Yes	No	No	No
Mentha spicata	Yes	No	No	No

As nouns, spearmint and Mentha spicata are synonyms defined as:

spearmint and Mentha spicata: common garden herb having clusters of small purplish flowers and yielding an oil used as a flavoring

spearmint (noun)	Mentha spicata (noun)
common garden herb having clusters of small purplish flowers and yielding an oil used as a flavoring	common garden herb having clusters of small purplish flowers and yielding an oil used as a flavoring