Vertebration refers to the presence of vertebrates or animals with spinal columns. However, there are several synonyms for the word that can be used in its place. One such synonym is vertebrate biology, which encompasses the study of the anatomy, behavior, and evolution of all vertebrates. Another synonym is chordate, which refers to animals with a notochord at some stage during their development. The term craniate can also be used, which describes animals with a skull and brain. Lastly, the word spine can be used as a synonym for vertebration, as it refers specifically to the bony structure that runs along the back and protects the spinal cord.