Insurance

I have to ask anyone who knows, what is term life insurance?
I have been wanting to get some life insurance for
my husband and I for our daughters but there
are so many different kinds of insurance definitions
out there that I am sure which one we need. I want
my girls to be okay and have money if anything
were to happen to us. But I also need something afford-
able that will not empty out our pocket book so
if anyone has suggestions please let me know.