Term: hammer: a striker that is covered in felt and that causes the piano strings to vibrate
Broader: physical entity: an entity that has physical existence | Unrelated: accommodation reflex: reflex changes in the eyes that enable an object to be focused on the retina
Broader: physical entity: an entity that has physical existence | Unrelated: thickness: the dimension through an object as opposed to its length or width
Broader: physical entity: an entity that has physical existence | Unrelated: photosynthesis: synthesis of compounds with the aid of radiant energy (especially in plants)
Broader: physical entity: an entity that has physical existence | Unrelated: mysticism: obscure or irrational thought
Broader: physical entity: an entity that has physical existence | Unrelated: liquid nitrogen: nitrogen in a liquid state
Broader: physical entity: an entity that has physical existence | Unrelated: billet: lodging for military personnel (especially in a private home)
Broader: physical entity: an entity that has physical existence | Unrelated: bullfinch: common European finch mostly black and white with red throat and breast
Broader: physical entity: an entity that has physical existence | Unrelated: tragedian: a writer (especially a playwright) who writes tragedies
Broader: physical entity: an entity that has physical existence | Unrelated: quantity: the concept that something has a magnitude and can be represented in mathematical expressions by a constant or a variable
Broader: physical entity: an entity that has physical existence | Unrelated: comber: a machine that separates and straightens the fibers of cotton or wool