What is the meaning of the terms FCL and LCL?

FCL:
It means “Full Container Load”. An FCL or Full Container Shipment, as the name suggests, is a shipment in which a shipper’s merchandise travels within a container without sharing space with other cargoes. 

LCL:
An LCL or maritime groupage, is a type of shipment in which the cargo travels inside a container along with the loads of other shippers. That is why this mode is also known as a “shared container”.