| | | United Kingdom | United States | | All right | Alright | | Aluminium | Aluminum | | Analyse | Analyze | | Apologise | Apologize | | Behaviour | Behavior | | Burnt | Burned | | Calibre | Caliber | | Cancelled | Canceled | | Catalogue | Catalog | | Centimetre | Centimeter | | Centre | Center | | Centred | Centered | | Centring | Centering | | Channelled | Channeled | | Cheque | Check | | Colour | Color | | Criticise | Criticize | | Customise | Customize | | Defence | Defense | | Doughnut | Donut | | Emphasize | Emphasize | | Encyclopaedia | Encyclopedia | | Enrolment | Enrollment | | Favour | Favor | | Favourite | Favorite | | Fibre | Fiber | | Finalise | Finalize | | Fulfil | Fulfill | | Fulfilment | Fulfillment | | Grey | Gray | | Harbour | Harbor | | Honour | Honor | | Humour | Humor | | Jewellery | Jewelry | | Judgement | Judgment | | Kilometre | Kilometer | | Labour | Labor | | Licence (noun) | Licence (noun) | | License (verb) | License (verb) | | Litre | Liter | | Manoeuvre | Maneuver | | Maximise | Maximize | | Metre | Meter | | Misdemeanour | Misdemeanor | | Mould | Mold | | Neighbour | Neighbor | | Odour | Odor | | Offence | Offense | | Organise | Organize | | Paralyse | Paralyze | | Personalise | Personalize | | Plough | Plow | | Programme | Program | | Pyjamas | Pajamas | | Realise | Realize | | Recognise | Recognize | | Rigour | Rigor | | Savour | Savor | | Skilful | Skillful | | Socialise | Socialize | | Specialise | Specialize | | Speciality | Specialty | | Splendour | Splendor | | Theatre | Theater | | Tranquillity | Tranquility | | Travelling | Traveling | | Tyre | Tire | | Valour | Valor | | Vapour | Vapor | | Vigour | Vigor |
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