How Does A Solid Differ From A Liquid?

Domenique1 I am just very happy that this question is not closed in order to allow me to provide you with an answer based on the concept of a solid based on the 3 phases of matter. The three phases of matter in the Universe are liquid, solid, and gas.
 
A solid has definite mass or weight and and occupies a fixed volume of  amount of space.
 
A liquid has definite mass and volume and therefore fixed density but does not conform to any specific shape.
 
A gas has no fixed volume or shape but has density.

There are also non- newtonian fluids which behave as solids and as liquids. They are at first a liquid but when pressure is put onto it it behaves as a liquid. And example of this is custard or cornflour mixed into water.

Liquid can be poured.  Solid cannot.