It's not quite as simple as just 5 groups of materials, as materials science is a vast field! However, you can broadly categorize materials into these 5 groups:

1. Metals: Characterized by their high electrical and thermal conductivity, malleability, and ductility. Examples include iron, copper, aluminum, gold, and silver.

2. Ceramics: Typically inorganic compounds made by firing clay or other minerals at high temperatures. They are strong, brittle, and resistant to high temperatures and chemicals. Examples include bricks, porcelain, glass, and cement.

3. Polymers: Large molecules composed of repeating structural units. They are lightweight, flexible, and often have good insulating properties. Examples include plastics, rubber, and synthetic fibers.

4. Composites: Materials made by combining two or more different materials with distinct properties. This creates a material with enhanced properties. Examples include fiberglass, carbon fiber reinforced polymer, and concrete.

5. Semiconductors: Materials with electrical conductivity between that of conductors (metals) and insulators (ceramics). Their conductivity can be controlled by doping with impurities. Examples include silicon, germanium, and gallium arsenide.

It's important to note that these groups are not mutually exclusive, and many materials can be classified into multiple groups. For example, a material might be a metal composite, or a ceramic might have some polymeric properties.