| Infectious Diseases | Non-Infectious Diseases |
| $(i)$ These diseases spread from an infected person to a healthy person. | $(i)$ These diseases do not spread from an infected person to a healthy person. |
| $(ii)$ These are usually caused by pathogens like bacteria,viruses,fungi,or parasites. | $(ii)$ These are caused by internal factors like genetic disorders,hormonal imbalances,or lifestyle choices. |
| $(iii)$ These are communicable diseases,e.g.,common cold,influenza,and tuberculosis. | $(iii)$ These are non-communicable diseases,e.g.,diabetes,hypertension,and cancer. |
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