W: (n) powerfulness [Related to: powerful] (possession of controlling influence) "the deterrent power of nuclear weapons"; "the power of his love saved her"; "his powerfulness was concealed by a gentle facade"
S: (adj) potent, strong, stiff (having a strong physiological or chemical effect) "a potent toxin"; "potent liquor"; "a potent cup of tea"; "a stiff drink"