Term life insurance covers you for a fixed period of time (also why it's named term) – mostly until 75 years old. That means, if you are diagnosed with terminal illness, total permanent disability, or pass away before 75 years old, your family will receive the lump-sum payout you were assured for. However, if you outlive your plan (aka live beyond age 75), your term insurance plan will automatically end and you will not get any of your money back.
Whole life insurance on the other hand, commonly covers you up to age 99, 100, or death (depends on your insurance company). If you outlive your plan, you will get guaranteed and non-guaranteed cash returns. You will also be able to add a multiplier (sometimes known as additional coverage) for a fixed number of years to boost the total sum you're assured for. Whole life insurance premiums generally cost 10 times more than term insurance due to the length and flexibility of coverage.