heiress vs heritor

heiress and heritor both are nouns.

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

As nouns, heritor is a hypernym of heiress; that is, heritor is a word with a broader meaning than heiress:

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

Other hypernyms of heiress include heir, inheritor, adult female, woman.

heiress (noun)	heritor (noun)
a female heir	a person who is entitled by law or by the terms of a will to inherit the estate of another