Though a base on balls, catcher's interference, or a batter hit by a pitched ball all result in the batter (and possibly runners on base) being awarded a base,  the term "walk" usually refers only to a base on balls, and not the other methods of reaching base without the bat touching the ball.
Though a base on balls, catcher's interference, or a batter hit by a pitched ball all result in the batter (and possibly runners on base) being awarded a base, the term "walk" usually refers only to a base on balls and not other ways of reaching base without hitting the ball.