What is a difference between a Walking Skeleton and an MVP? I've recently stumbled upon the "Walking skeleton" term and got a bit confused about the terminology.

Is it the same or a variation of a Minimum Viable Product, or how does it relate to MVP in general?
The walking skeleton reflects the rough structure/shape of the product, but it may be entirely stubbed out (initially), meaning it may not be actually functional. The skeleton cannot move without the muscles.

The MVP however must meet a certain minimum functionality level to be considered viable.

As development progresses the walking skeleton typically morphs into an MVP and eventually into a final product.