secretor vs secreter

secretor and secreter both are nouns.

Word	Noun	Adjective	Verb	Adverb
secretor	Yes	No	No	No
secreter	Yes	No	No	No

As nouns, secretor and secreter are synonyms defined as:

secretor and secreter: any of various organs that synthesize substances needed by the body and release it through ducts or directly into the bloodstream

Other synonyms of secretor include gland, secretory organ.

secretor (noun)	secreter (noun)
any of various organs that synthesize substances needed by the body and release it through ducts or directly into the bloodstream	any of various organs that synthesize substances needed by the body and release it through ducts or directly into the bloodstream