Cage free and free range refer to similar but slightly different conditions. Cage free usually refers to egg-laying poultry and not confining them in individual cages. Free range usually refers to poultry and livestock that are used for meat products. Both refer to allowing animals more space to move and exercise. By comparison, caged poultry and feedlot livestock get very little exercise.
Animals that get more space and exercise have a better life and are healthier. Animals that are closely confined require more artificial antibiotics to prevent the spread of disease and hormones to stimulate growth.