Infectious-Contagious | Commonly Confused Words
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Master confusing words with ease

Infectious vs. Contagious

Infectious

/ɪnˈfekʃəs/
Causing or capable of causing infection by spreading pathogens.

Examples:

Laughter is infectious, spreading smiles across the room.The enthusiasm of the team was totally infectious.Her creativity is infectious, inspiring everyone around her.

Synonyms:

Antonyms:

Contagious

/kənˈteɪdʒəs/
Able to spread from one person or organism to another by direct or indirect contact

Examples:

Her enthusiasm for the project was contagious.Laughter can often be surprisingly contagious.Yawns are known to be incredibly contagious.

Synonyms:

Antonyms:

This word has no antonyms

Ways to tell them apart:

etymology
  • Contagious is often used to describe a disease that can be transmitted through direct contact or close proximity.
  • Infectious is a broader term that refers to diseases caused by microorganisms, which may or may not be easily spread to others.
  • All contagious diseases are infectious, but not all infectious diseases are contagious.
  • Infectious diseases include diseases caused by bacteria, viruses, fungi, etc., while contagious specifically refers to the transmission aspect.
  • Remember, contagion is about contact and spreading, while infection is about the presence of pathogens.
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