Piling is a type of ground treatment which is driving a pile into the ground below ground level. Except sheet pile, other piles like concrete pile, timber pile, steel pile, bored pile are used to transfer the building load to the ground.
Definition of repeal. 1  transitive verb. 2  1 : to rescind or annul by authoritative act; especially : to revoke or abrogate by legislative enactment. 3  2 : abandon, renounce. 4  3 obsolete : to summon to return : recall.
Revoke means to undo or call back and terminate means to finish or end. The implication is that the person who revokes something was its creator in the first place. To have power to terminate something isn't necessarily linked to being the author of the thing. A law can give a court power to terminate contracts that is infringe certain rules, for example.