different between cornerback vs linebacker

English

corner +? back

cornerback (plural cornerbacks)

(American football, Gaelic football, hurling) Any of the defensive players who are in position on each side farthest laterally from the ball and whose principal responsibility is to defend against passes.
The cornerback tipped the ball away from the receiver.

linebacker (plural linebackers)

(American football) The defensive players who are in position behind the defensive linemen and in front of the safeties and cornerbacks and whose principal responsibilities are to tackle runners and to defend against shorter passes
The linebacker corralled the runner who had slipped through the hole.

linebacker m (plural linebackers)

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