Infection vs Contagious - What's the difference?

infection | contagious |

As a noun infection

is (pathology) the act or process of infecting.

As a adjective contagious is

of a disease, easily transmitted to others.



(en noun)
  • (pathology) The act or process of infecting.
  • An uncontrolled growth of harmful microorganisms in a host.
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    Derived terms

    * spurious infection



    (en adjective)
  • Of a disease, easily transmitted to others.
  • The flu was so contagious that everybody in town got sick!
  • Of a fashion, laughter, etc., easily passed on to others.
  • Wearing jeans was a contagious fad at that time.
  • Of a person, having a disease that can be transmitted to another person by touch.
  • They were highly contagious , spreading bacteria to other people.


    * (of a disease) catching, infectious * infectious


    * non-contagious

    Derived terms

    * contagiousness * contagion