The term 'PREFIX WITH FACE OR FAITH' has a crossword solution of 'INTER, ' which is a five-letter word. The prefix 'INTER-' is derived from the Latin word for 'BETWEEN' and is used to describe something that occurs BETWEEN two other things or people. It is commonly used in words such as 'INTERACT, ' 'INTERCONNECT, ' and 'interdependent.' When combined with the words 'FACE' or 'FAITH, ' it can be used to describe something that exists BETWEEN two faces or two faiths.