What is another name for liner?

Another name for liner depends on context and what type of liner referred to, but synonyms include lining, inner layer, insert, membrane, covering, padding, and interlining. For trash bin liner, another name is garbage bag, can liner, trash bag, or bin bag. For pond liner, another name is pond membrane, geomembrane, waterproof membrane, or pond sheet. For clothing liner, another name is lining, inner lining, interlining, or underlining. For panty liner, another name is pantiliner, panty shield, or sanitary liner. For eyeliner, another name is eye pencil or kohl. For chimney liner, another name is chimney flue liner or chimney sleeve. For drum liner, another name is drum insert or drum bag. For ocean liner, another name is cruise ship or passenger ship. So another name for liner could be lining for general, membrane for waterproof, insert for protective, or bag for trash, with specific synonym determined by application, but core synonyms are lining, membrane, and insert.