A permanent life insurance policy provides lifetime protection and remains In Force until you die, if you pay your premiums on time.
Whereas, a term (temporary) life insurance policy stays In Force until your coverage expires, or you die, which ever happens first.
So, you may outlive the duration (Policy term) of your term life insurance coverage, which means your life insurance would expire at the end of your policy term.
Usually, term life offers coverage for a term of 10, 15, 20, 25, 30, 35, or 40 years. At the end of your policy term your life insurance coverage expires if you are still alive.
Learn more about Does life insurance expire?