busy vs on the go

busy

• Having a lot going on; complicated or intricate. 

• Officious; meddling. 

• Engaged in activity or by someone else. 

• Crowded with business or activities; having a great deal going on. 

• To rush somebody. 

• To make somebody busy or active; to occupy. 

• A police officer. 

on the go

• Actively traveling; busy; moving often. 

• In progress; having started.