American and British English Differences -- Page 5

14. American English uses many compound words spelled as a single word where British English uses them hyphenated or as two words.
Some representative examples are:

British American   British American   British American   British American   British American
proof-reader proofreader   class work classwork   non-smoking nonsmoking   kind-hearted kindhearted   under-nourish undernourish
tight-lipped tightlipped   shop-worn shopworn      

American and British English Differences -- Page 5

15. American English has some words ending in "ense" such as defense where British English ends in "ence" and spells them as defence.
Some representative examples are:

British American   British American   British American   British American   British American
defence defense   licence license   nonsence nonsense   offence offense