The term MOORS is associated with a type of terrain found in the British Isles. TIES (4 letters) is a type of knot used to fasten two pieces of material together. HEATHS (6 letters) are open tracts of land covered with heather and other shrubs. FENS (4 letters) are wetlands that are fed by groundwater and runoff. TIESON (6 letters) is a type of fabric used to make clothing. All of these terms are related to the MOORS, which is an area of land characterized by heath, FENS, and other vegetation.