Respuesta :

The difference is that cardio focuses mainly on your cardiovascular system which is vital in activities such as running, swimming etc. Strength training is mainly based on well, strength. How much weight can be lifted. so the difference really speaks for itself. A runner will mostly do cardio whereas a football player will mainly focus on strength. Both can be used simaltaneously in a work out.
The difference between them are 

Cardio is cardiovascular exercise. Cardio exercise is any exercise that raises your heart rate. Face it our bodies were made to move. And we all know that to keep our muscles in shape we need move them. This movement makes them stronger and stronger muscles make for a more efficient and healthy body. Your heart is a muscle.

and Strength is 
the quality or state of being strong, in particular.