Spools are cylindrical objects that are usually used to hold or wind thread, yarn, rope, or wire. These objects come in various shapes and sizes, and there are many synonyms that can be used to describe them. Some common synonyms for the word 'spools' include reels, coils, bobbins, rolls, winding cores, and spindles. Each of these synonyms refers to a cylindrical object that is used to hold or wind materials. These terms can be used interchangeably to describe objects of different sizes and shapes, depending on the context. Overall, the word 'spools' has many synonyms, each with its unique application.