The word is spelt as you have in the question. As it happens, there is no difference between the American spelling and British spelling of the words.
It is spelt two.
true
its spelt whole.
· King George III, king of England
The number 2 is spelt 'two'.
Daydreaming can either be spelt as one word or two, if you wish it to be spelt as two words you have spelt it correctly, but if you wish it to be a single word, as it is usually seen, it would be written daydreaming.
Think if it as two words - Con Air. In other words it is pronounced as it is spelt.
The two words are spelt as you have done in the question.
Can be spelt either way.
The word "hardworking" can be spelt as a single word or as two words.
The difference between the two words is that they are both spelt differently - though neither are spelt correctly - the correct spelling is Autumn.