Question

What is the difference of usage between 'centre' and 'center'?

Answer 1

I'm from Canada and use "centre" and "theatre" all the time and my American dictionary flags it as an error.

Explanation:

It is acceptable in different places. In Canada and England it is acceptable to spell labour, glamour, and humour but only glamour works in the American spellcheck. Load a different English Dictionary and you'll get different spellings.

The last letter of the alphabet is "zee" in America, "zed" in Britain and either way in Canada.

"You say tomato, I say tomato." (Its a song you say the word "tomato" differently in Britain to the United States)

https://en.oxforddictionaries.com/spelling/adding-endings-to-words-that-end-in-our