Infectious diseases are contagious and can be spread from one person to another. Non-infectious diseases are not contagious and cannot be spread from one person to another.
Few examples of infectious diseases include influenza, SARS, and common cold.
Few examples of non-infectious diseases include cancer, diabetes, and many heart diseases.
Infectious means it can be spread why non-infectious means it can't be spread.
Hope it helps.
Non infectious dieases can't be catched by others unlike infectious diseases.
A Noninfectious disease are caused by genetic factors and lifestyle factors. Diabetes, hypertension, coronary hear disease etc.
I hope this helps.