The term 'THEATRE, PART OF' can be solved by the crossword solutions of 'STAGE' (5 letters) and 'LOGE' (4 letters). The STAGE is the main area of a theatre where the performance takes place. It is usually raised above the audience and has a proscenium arch which frames the action. The loges are the private boxes located on the sides of the STAGE, usually reserved for the wealthy or important members of society.