Homologous structures are anatomical features in an organism that are structurally and functionally diverse but they originate from a single common ancestor.
Homologous structures possess a similar basic internal structure but can have entirely different morphology and function.
For example, the wings of a bat and a human's arm have the same internal structure but they have different functions.
Vestigial structures are evolutionary remnants that no longer serve a purpose in modern forms or descendants of the original organism.
Inherited and developmental are out of context in terms of evolutionary relationships.
