If you have a permanent life insurance plan you have guaranteed lifetime life insurance protection for as long as you keep paying your premiums on time.
If you have a term life insurance policy you have life insurance coverage for the entire duration of the "term" of your policy as long as your premiums are paid on time.
Term life offers coverage for a "term" of 10, 15, 20, 25 or 30 years from most insurers offering term life insurance policies.
In addition, some term life policies offer the option to "renew" your term policy for another term usually of up to 10 years when your original policy ends.