Alexander vs horse parsley

Alexander and horse parsley both are nouns.

Word	Noun	Adjective	Verb	Adverb
Alexander	Yes	No	No	No
horse parsley	Yes	No	No	No

As nouns, Alexander and horse parsley are synonyms defined as:

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

Other synonyms of Alexander include Alexanders, black lovage, Smyrnium olusatrum.

Alexander (noun)	horse parsley (noun)
king of Macedon; conqueror of Greece and Egypt and Persia; founder of Alexandria (356-323 BC)	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