Gasses are very compressible but liquids and solids are not: For example you can squash a balloon full of gas with your fingers and change its shape easily, but you cannot squash a solid ball easily.

Some solids are very elastic and extendable (stretchy) For example we can stretch (and bend) a piece of rubber a lot and it comes back to its original shape

But some solids are not elastic and break easily or stay bent For example if we bend a twig too much it breaks, or if we bend a wire too much it stays bent - which is why we can make wire shapes like stars