heir vs heritor

heir and heritor both are nouns.

Word	Noun	Adjective	Verb	Adverb
heir	Yes	No	No	No
heritor	Yes	No	No	No

As nouns, heir and heritor are synonyms defined as:

heir and heritor: a person who is entitled by law or by the terms of a will to inherit the estate of another

Other synonyms of heir include inheritor.

heir (noun)	heritor (noun)
a person who is entitled by law or by the terms of a will to inherit the estate of another	a person who is entitled by law or by the terms of a will to inherit the estate of another
a person who inherits some title or office