Materials that do not let electrons to flow freely but do not directly stop them either.
Materials that freely allow the flows of electrons with very little resistance.
Materials that greatly impede or stop the flow of electrons with very high resistance.
Comparing and contrasting
Semiconductors have resistance included in them just like an insulator however a conductor allows electricity to flow freely.
We use this in our daily life to cook, watch tv and to have light. Semiconductors are in tv wires. Conductors are everywhere in every electrical thing. Insulators help cut off electricity.