Theater and theatre are two correct spellings of the same word, meaning a building or venue where plays, movies, concerts, ...

Dreamed is the past tense and past participle of the verb dream. It means to have experienced a dream while ...

Ageing and aging are two correct spellings of the same term that refers to the natural process of growing older ...

Travelled and traveled are two correct spellings of the past tense and past participle of the verb travel. Travelled is ...

Both cancelling and canceling are correct. Canceling is the standard spelling in American English, while cancelling is preferred in British ...

Both grey and gray are correct spellings of the same word. Gray is the preferred spelling in American English, while ...