Answer:
Privity of contract, Assignment
Step-by-step explanation:
Privity of contract is the relationship that exist between the parties to a contract which allows them to sue each other meanwhile it prevents a third party from doing so. It is a common law principle which provides that a contract cannot confer rights or impose obligations upon any person who is not a part to the contract.
Assignment: This is the act of transferring all or part of one's rights arising under a contract to another another person.