Disease--it means discomfort
infectios disease--cholera
non infectious disease-cancer
..ex 1:
           if one person has an  infectious disease it spreads to all.. thats why when we think about disease we think about individual sufferer . 
ex 2:
         If our community is clean without stagnant water and large storage of garbage we will have a good health so, if we think about good health we think about the community we live .