In literature, "grating" functions with both literal and metaphorical force. It often denotes a physical structure—an interlaced barrier or screen that divides interior from exterior, as seen in descriptions of iron or wooden bars securing a window or door ([1], [2], [3], [4]). At the same time, the term conveys harsh, discordant sounds: the creak of metal or the rasp of mechanical parts is rendered vividly through phrases like "a sharp grating sound" or "grating key" ([5], [6], [7]). Moreover, "grating" carries a figurative weight when used to illustrate abrasive interactions or words that jar the listener’s sensibilities ([8], [9], [10]).