Example image of eyePlorer eyePlorer map for 'American and British English spelling differences': American and British English differences English orthography Dictionary A Dictionary of the English Language American English British English Noah Webster Samuel Johnson Webster's Dictionary Philology Spelling reform Simplified Spelling Board United States Anglo-Norman language England Norman conquest of England United Kingdom Commonwealth of Nations Lexeme Velour Vowel reduction in English Old French Renaissance Arbor False cognate Tool Tree H. L. Mencken Thomas Jefferson Wedding invitation HMS Endeavour James Cook Space Shuttle Endeavour Spacecraft Savory (genus) Chills Rigour Canadian Prairies Australian Labor Party Australian English New Zealand English Caliber Center Fiber Goitre Litre Lustre Mitre Niter Potassium nitrate