What part of speech is “treatment”

a treatment is a noun that typically means an action, method, or procedure intended to either heal or improve an existing condition or condition. It can refer to a medical or psychological therapy, a therapeutic massage, a beauty treatment, or a special course of action introduced to improve a situation.

1. His doctor recommended massage therapy as a treatment for his chronic back pain.

2. The anti-anxiety medication prescribed to the patient had considerable effect after several weeks of treatment.

3. She opted for a hydrating facial treatment to restore her skin's health and glow.