Filling is a type of material used to fill in gaps or cavities, usually between two objects. The term PACK (4 letters) refers to the process of packing a material into a space, such as a gap or cavity. WAD (3 letters) is a small mass of material, such as cotton, wool, or paper, that is used for filling a space or forming a seal. STOPPING (8 letters) is a type of material used to fill in gaps or cavities, usually between two objects. DISCHARGING (11 letters) is the process of releasing a material from a container or other form of storage. PARTS (5 letters) are components of a larger object or system. WEFT (4 letters) is a type of material used to fill in gaps or cavities, usually between two objects. INLAY (5 letters) is a type of material used to fill in gaps or cavities, usually between two objects.