Heir
Part of speech: noun
Definition: Someone who inherits, or is designated to inherit, the property of another. One who inherits, or has been designated to inherit, a hereditary title or office. A successor in a role, representing continuity with the predecessor.
Example sentence: Syria is the proud heir of an ancient civilization that has a unique spectrum of minorities that encompasses Muslims and Christians of various denominations. There are at least ten such ethnic and religious groups.
Heritor
Part of speech: noun
Definition: A person who inherits; an heir or heiress