abridgment: abridgement
acknowledgment: acknowledgement
aging: ageing
airdrome: aerodrome
airplane: aeroplane
aluminum: aluminium
ampule: ampoule
analog: analogue
artifact: artefact
ax: axe
broadcasted: broadcast
carburetor: carburettor
catalog: catalogue
cleanup : clean-up
clothespin: clothes peg
cotton candy: candy floss
cozy: cosy
defense: defence
defenseless: defenceless
dialog: dialogue
diaper: nappy
diarrhea: diarrhoea
donut: doughnut
drape: curtain
eggplant: aubergine
emcee: compere
eon: aeon
epilog: epilogue
esophagus: oesophagus
esthetic: aesthetic
esthetical: aesthetical
esthetics: aesthetics
estrogen: oestrogen
freeway: motorway
garbage bin: rubbish bin | dustbin
garbage can: rubbish bin | dustbin
garbage: rubbish
garters: suspenders
glycerin: glycerine
gonorrhea: gonorrhoea
gray: grey
graybeard: greybeard
grayish: greyish
homolog: homologue
janitor: caretaker
jewelry: jewellery
license: licence
licorice: liquorice
makeup : make-up
maneuver: manoeuvre
mollusk: mollusc
molt: moult
monolog: monologue
movie theater: cinema
offense: offence
overpass: flyover
pajama: pyjama
parking lot: car park
percent: per cent
percents: per cent
pickpocketer: pickpocket
pickpocketers: pickpockets
plow: plough
practise: practice
pretense: pretence
prolog: prologue
sidewalk: pavement
skeptic: sceptic
skeptical: sceptical
skepticism: scepticism
snowplow: snowplough
thumbtack: drawing pin
tidbit: titbit
tire: tyre
trash can: rubbish bin | dustbin
trash: rubbish