Collar-and-elbow is a technique used in wrestling where the opponent's collar and elbow are held to gain control or to perform a certain move. However, there are several synonyms that can be used for this term. Some common ones include "tie-up," "lock-up," "clinch," "grapple," "wrestle-up," and "headlock." Each term refers to a similar grappling technique used to control an opponent, especially in wrestling or martial arts. It is important for wrestlers to learn and master various collar-and-elbow techniques and their synonyms to gain an advantage over their opponents. With practice, wrestlers can learn how to use these techniques to secure a win in a match.