Put on and Put up a front

Put on verb - To place on one's person.

Put up a front and put on are semantically related In some cases you can use "Put up a front" instead a verb "Put on".

Put on and put up a front are semantically related in trick topic. You can use "Put on" instead a verb phrase "Put up a front", if it concerns topics such as fake, pretend, tell an untruth.