The term 'SET UP SHOP' is a phrase that means to establish a business or organization. It is often used to describe the process of starting a new business, such as opening a store or restaurant. The crossword solutions for this term are SET (3 letters) and SHUT (4 letters). SET is an action verb meaning to put something in place, while SHUT is an action verb meaning to close something. Together, these two words form the phrase 'SET UP SHOP, ' which describes the process of establishing a business.