power

possession of controlling influence

the deterrent power of nuclear weapons

(physics) the rate of doing work; measured in watts (= joules/second)

possession of the qualities (especially mental qualities) required to do something or get something done

danger heightened his powers of discrimination

(of a government or government official) holding an office means being in power

being in office already gives a candidate a great advantage

one possessing or exercising power or influence or authority

the mysterious presence of an evil power