no these are different concepts assassination is targeted killing of a public figure for a large motive which benefits from the death of said individual such as political upheaval crippling a government inciting a panic eliminating a dictator that isn't cooperating with your nation like all the other dictators etc bob could decide to assassinate jfk and do it himself and it's an assassination and not a contract killing then maybe he hires his maid to kill his wife just cuz he doesn't like his wife any more that's a contract killing but not an assassination because his wife isn't a figurehead and he doesn't accomplish broad change it's a simplified example but hopefully straightforward enough