Take a bath and Wash up

Wash up and take a bath are semantically related in wash topic. In some cases you can use "Wash up" instead a verb phrase "Take a bath", when it comes to topics like bathe.

Wash up verb - Wash one's face and hands.

Take a bath and wash up are semantically related in wash topic. Sometimes you can use "Take a bath" instead a verb "Wash up", if it concerns topics such as bathe.