Alexanders vs Alexander

Alexanders and Alexander both are nouns.

Word	Noun	Adjective	Verb	Adverb
Alexanders	Yes	No	No	No
Alexander	Yes	No	No	No

As nouns, Alexanders and Alexander are synonyms defined as:

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

Other synonyms of Alexanders include black lovage, horse parsley, Smyrnium olusatrum.

Alexanders (noun)	Alexander (noun)
European herb somewhat resembling celery widely naturalized in Britain coastal regions and often cultivated as a potherb	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