The airline baggage allowance is the maximum amount of checked baggage and carry-on/cabin baggage per passenger. The baggage limits depends on your ticket, cabin class, destination and the connection flights. It's important to check your baggage allowance before check-in to avoid paying the expensive excess fees.
Checked baggage is stored in the aircraft hold and can be up to 32kg per baggage. All checked baggage are weighed during check-in, and if they exceed the limit, an excess fee will be added per kilo exceeded.
Cabin baggage is judged primarily by size, but the weight is very important. The carry-on allowance is typically around 15-22lb (7-10kg) depending on airline.