Call up and Make a call

Call up verb - Get or try to get into communication (with someone) by telephone.

Make a call and call up are semantically related in telephone topic. In some cases you can use "Make a call" instead a verb "Call up", when it comes to topics like communicate through telephone system.

Call up and make a call are semantically related in telephone topic. You can use "Call up" instead a verb phrase "Make a call", if it concerns topics such as communicate through telephone system.