Question

what is glass it is solid

Answer 1

glass is neither a liquid nor a solid
it is an amorphous soid

Answer 2

Glass is neither a liquid nor a solid. It is an amorphous solid—a state somewhere between those two states (liquid and solid) of matter. And yet glass's liquid like properties are not enough to explain the thicker-bottomed windows, because glass atoms move too slowly for changes to be visible.