What is the anatomical name of this design choice to have spikes

Heat Spikes during nail coating application - NailKnowledge

Frontal lobe: Functions, structure, and damage

Is there any known ceratopsian with only one horn? : r/Paleontology

Foot, Description, Drawings, Bones, & Facts

What is the purpose of the spikes on the back of the spine? - Quora

What Causes Back Pain? – Spine Anatomy Overview

Neuromorphic electro-stimulation based on atomically thin

Claws, Jaws and Spikes: The Science of the Dinosaur Arsenal

Is there any evidence that there were feathers on triceratops' back? : r/Dinosaurs