Corporal relates to the physical body, most often seen in the phrase corporal punishment, and is also the name of a junior military rank. Corporeal is the broader word for anything physical or tangible, as opposed to spiritual or abstract.
The core difference
Corporal is mostly tied to the body and to the military rank, while corporeal describes anything material or tangible.
- corporal — relating to the physical body rather than the mind or spirit: Corporal punishment involves physically striking someone as a penalty.
- corporeal — material, tangible or physical, as opposed to spiritual: Ghosts are said to have no corporeal form.
How to tell them apart
Both words trace back to the Latin corpus, meaning body, so their closeness in meaning is not a coincidence. Corporal is the narrower, more specific term, used almost entirely in fixed phrases such as corporal punishment and corporal hardship, and unrelatedly as the name of a military rank above private and below sergeant. Corporeal is the wider, more abstract term, used when contrasting the physical with the spiritual or the tangible with the intangible.
A memory trick: corporal punishment strikes the body directly, while corporeal existence is about having a body at all, as opposed to being a spirit or an idea.