horse parsley vs Smyrnium olusatrum

horse parsley and Smyrnium olusatrum both are nouns.

Word	Noun	Adjective	Verb	Adverb
horse parsley	Yes	No	No	No
Smyrnium olusatrum	Yes	No	No	No

As nouns, horse parsley and Smyrnium olusatrum are synonyms defined as:

horse parsley and Smyrnium olusatrum: European herb somewhat resembling celery widely naturalized in Britain coastal regions and often cultivated as a potherb

Other synonyms of horse parsley include Alexander, Alexanders, black lovage.

horse parsley (noun)	Smyrnium olusatrum (noun)
European herb somewhat resembling celery widely naturalized in Britain coastal regions and often cultivated as a potherb	European herb somewhat resembling celery widely naturalized in Britain coastal regions and often cultivated as a potherb