A pillow is said to be a solid. But it can be easily compressed. So which state of matter would it be in OR would it still be called a solid?
Actually solids, rather than “compressed”, are “deformed” by pressure (at human or quotidian rather than stellar core levels).
That’s what happens with rubber, for instance. It deforms. You press it somewhere and a bit of it flows to another place. Also, the more porous (more amounts of contained air of other gases), the more it will compress. Rubber cells deform and compress the gas inside them… thus, it’s air/gas what actually gets compressed, rather than the solid itself.
And just to state the fact: Solids and liquids can actually be compressed, but unlike gases, the former require far greater amounts of pressure/energy to achieve this effect.