“Vapor” is American English, while “vapour” is British English both mean the same substance in gas form. Bilal was writing ...

“Mom” and “mum” both mean mother “mom” is American English, while “mum” is British English. Last night, a child sat ...

Both while and whilst are correct. While is common in American English. Whilst is more common in British English. An ...

Both spellings are correct; “orthopedic” is preferred in American English, while “orthopaedic” is standard in British English. Have you ever ...

Both “harbor” and “harbour” are correct; the difference depends on American vs British English. The spelling confusion between harbor or ...