Free weights include dumbbells, barbells, medicine balls, sandbells, and kettlebells.
.Resistance training is any exercise that causes the muscles to contract against an external resistance with the expectation of increases in strength, tone, mass, and/or endurance. The external resistance can be dumbbells, resistance bands, rubber exercise tubing, your own body weight, bricks, bottles of water, or any other object that causes the muscles to contract. Read more HERE
For my UK readers looking for a great range of free-weights, resistance bands and other fitness equipment, try Millet Sports, they're one of the UK's leading online sports and fitness equipment suppliers.