If you say Layer 3 Routing, you look silly. Routing refers to the forwarding of packets from one network to another. Packets are Layer 3. If you are forwarding frames then that is known as switching.
When you say Layer 3 routing, you are actually saying “packet routing packets”. And that is a tautology.
So stop it. Just say routing, or Layer 3 forwarding.
I feel better now. Rant over.