Difference between homologous structures and analogous?

Homologous structures are any structures that have similarity and come from the same lineage. This can be seen in the forelimbs of mammals.

Analogous structures are very similar but come from different ancestors. This can be seen in the North American flying squirrel vs the Australian sugar glider. They both have similar features but come from 2 different locations. In fact, the Australian sugar glider is more related to the kangaroo than the flying squirrel