Well the Respiratory System is the part of the body where the food and drinks and other things we take in for nutrition. Those food will go and stay in the digestive system and after digesting those food solids and other things, they go to the respiratory system where our waste is being release from the stomach then those waste that is released by the body is what we call urine and the...poop 
Respiratory System only deals with gasses the organ involve in this is lungs, and nose while digestive system deals with the stomach and intestines if there's a corroboration with this systems it is called process. . hope to lighten you.
yes sorry I'm not that specific, still learning how life works
The waste released by the body during RESPIRATION is called carbon dioxide in tagalog utot and the other dioxide is called dighay? :)