The term 'rough (unrefined)' can be summarized by two crossword solutions: 'COARSE' (6 letters) and 'HEWN' (4 letters). COARSE is an adjective that means 'lacking refinement or delicacy'. It is often used to describe physical characteristics, such as texture or grain. HEWN is a verb that means 'to cut or shape (something) with an ax or other tool'. It is often used to describe the process of cutting and shaping wood or stone. Together, these two words provide a good summary of the term 'rough (unrefined)'.