Spirit is eternal and is what you truly are. The perceiver, the core principles, the free will., etc. Spirit is also what animates your body.

Soul is your ‘self’. AKA feelings, desires, fears, thoughts, memories, preferences, ego, etc. Soul is what gives life its ‘color’ and meaning and personality.

You can get a new self, presumably. But your Spirit is ‘you’ so it can never be replaced.