The words "mold" and "mould" are simply different spellings of the same word with identical meanings. The difference depends on the variety of English being used.
- "Mold" is the preferred spelling in American English.
- "Mould" is the preferred spelling in British English and many other English-speaking countries such as Canada and Australia (though Canada sometimes uses "mold" due to American influence).
Both terms refer to the same things: a type of fungus growing on damp or decaying materials, a container used for shaping materials, or the verb meaning to shape or influence something. The meaning is exactly the same regardless of spelling, just regional differences in usage.
