Life insurance is a contract between an insurance company and a policyholder, where the insurer pays a sum of money to the beneficiaries when the policyholder dies. In exchange, the policyholder pays premiums to the insurer while they are alive. 
 
The main purpose of life insurance is to provide financial security to the policyholder's family. Some types of life insurance include:
Term life insurance
A simple type of life insurance that provides financial protection for a set period of time. It is generally more affordable than permanent life insurance.
Whole life insurance
A policy that covers the policyholder for their entire life, up to a certain age. It usually has a death benefit and a cash value that grows over time.
Endowment policy
A life insurance contract that pays a lump sum after a specific term or upon the death of the policyholder. It can also be an investment plan that helps grow wealth.
Unit linked insurance plan (ULIP)
A combination of insurance and investment. The premium paid for a ULIP is partially used for insurance and partially invested in different funds.
 
When choosing a life insurance company, you can consider things like their financial strength, customer satisfaction, and the number of policy types they offer.