Hair brush. Fingernail clippers. Necktie. Kneepad. Nose clip. Ear muffs. Chest plate. Skin lotion.

  That makes callouses akin to scars, abrasions, lacerations, burns, puncture wounds, tattoos, piercings, etc. that while they appear on the body parts, they are not separate body parts nor actual body parts themselves, correct? Are moles and skin tags considered body parts?
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