Appertainment :: Appertainment (n.) That which appertains to a person; an appurtenance.
Pertain :: Pertain (v. i.) To belong; to have connection with, or dependence on, something, as an appurtenance, attribute, etc.; to appertain; as, saltness pertains to the ocean; flowers pertain to plant life..
Pertain :: Pertain (v. i.) To have relation or reference to something.