Student or Learner
Would you share with me your opinion concerning the following two sentences?
Her nails tore into his back.
She got her nails into his back.
Thanks for your efforts.
In the first she has clearly damaged the skin on his back.
In the second it is not clear; can you imagine her nails simply dug into his back (like knives). It is the dragging action in the first sentence than does the damage.
In a practical sense the nails would need to be very tough because under pressure they would almost certainly break. But they could still do superficial damage, drawing blood.