In anatomy terms the difference between cartilage and perichondrial

is that cartilage is a type of dense, non-vascular connective tissue, usually found at the end of joints, the rib cage, the ear, the nose, in the throat and between intervertebral disks while perichondrial is of or pertaining to the perichondrium; situated around cartilage.

As a noun cartilage

is a type of dense, non-vascular connective tissue, usually found at the end of joints, the rib cage, the ear, the nose, in the throat and between intervertebral disks.

As an adjective perichondrial is

of or pertaining to the perichondrium; situated around cartilage.