Roast in preheated oven until cooked to your desired degree of doneness; about 4 1/2 hours (20 minutes a pound) for medium-rare. Roast to an internal temperature of 120 degrees F (49 degrees C) for medium-rare; 130 degrees F (54 degrees C) for medium; or 140 degrees F (60 degrees C) for well done.
A senator is a congressman, a congressman isn't necessarily a senator. Congress is made up of the Senate and the House of Representatives, and both senators and representatives of the House are referred to as congressmen. A senator can always be referred to as a congressman, but a congressman is not necessarily a senator in the event they are a representative. Continue Reading.
If you're speaking of the difference in US terminology. A governor is the head of a single state. A senator is the state's representative in the Senate. Each state has two senators, between one and 50 representatives in the House, and only one governor.