Therapist
Part of speech: noun
Definition: Someone who provides therapy, usually professionally.
Example sentence: I like to have a massage therapist come to my house, get a massage, take a bath, go to bed. That's a perfect night alone for me.
Healer
Part of speech: noun
Definition: Agent noun of heal; a person who heals, especially through faith.
Example sentence: I am a faith healer. My prayers have immense power, which I utilise whenever I can.