Fluid- A fluid that takes the shape of its container, but retains a nearly constant volume independent of pressure.
Gas- Gas has no shape and no volume.
Liquid- A liquid is a nearly incompressible that conforms to the shape of its container but retains a nearly constant volume independent of pressure.
Phase- is a region of space, throughout which all physical properties of a material are essentially uniform.
Solid- is its own shape can not take the shape of an container. A solid forms from liquid or gas because the energy of atoms decreases when the atoms take up a relatively ordered, three-dimensional structure.
state- a state of matter is one of the distinct forms in which matter can exist. three states of matter are observable everyday solid, liquid, and gas.
Viscosity- Viscosity is a liquid's resistance to flow.
If you could look up "state of matter" with the word you can find a picture
