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Mold vs Mould
Difference, Examples & Quiz

What's the difference? Which one is correct?


Definition: Mold refers to a fungus that grows in the form of multicellular filaments called hyphae. It can be found both indoors and outdoors and can cause various health issues.

Usage: Mold can grow on damp surfaces such as walls, ceilings, and fabrics. It is important to address mold growth promptly to prevent further damage and potential health risks.

Example sentences:
  • 1. The bathroom had a significant mold problem due to a leaky pipe.
  • 2. The presence of mold in the basement indicated a moisture issue.
  • 3. The mold on the bread made it inedible.

Definition: Mould is a British spelling variant of the word 'mold'. It refers to the same concept of a fungus that grows in the form of multicellular filaments called hyphae.

Usage: In British English, 'mould' is the preferred spelling for the fungus, while 'mold' is more commonly used in American English.

Example sentences:
  • 1. She noticed mould growing on the walls of her old house.
  • 2. The damp conditions in the cellar caused mould to develop on the furniture.
  • 3. The presence of mould in the bathroom indicated a moisture problem.

Mold is the American English spelling, while Mould is the British English spelling. Both words refer to a fungus that grows on organic matter, as well as the process of shaping or forming something.

Quizzes about "Mold" vs "Mould"

Mold vs Mould: 5 Quizzes

1. What is the difference between Mold and Mould?

2. Which spelling is commonly used in Canada?

3. Which spelling is preferred in Australia?

4. Which spelling is used in scientific contexts?

5. Which spelling is more common worldwide?


  • What is mold?

    Mold is a type of fungus that grows in damp and humid environments.

  • How does mold affect health?

    Exposure to mold can cause allergic reactions, respiratory issues, and other health problems.

  • How can I prevent mold growth?

    To prevent mold, ensure proper ventilation, control moisture levels, and fix any water leaks or damp areas.

  • How do I remove mold?

    To remove mold, use a mixture of water and detergent, or specialized mold cleaning products. Ensure proper safety measures.

  • What are common signs of mold in a property?

    Common signs of mold include a musty odor, visible mold growth, water stains, and allergic reactions in occupants.