The Catechism in Questions & Answers

92. What happens after a human being’s physical death?

The human body is mortal, whereas the soul and spirit are immortal. After the death of the body, a human being continues to live on as an entity consisting of soul and spirit. Death does not put an end to human personhood. This personhood is then expressed through soul and spirit.
At the resurrection of the dead, soul and spirit will be united with a resurrection body.

Life after physical death: see Question 531. et seq.