Common Differences
English American English
all right all right,alright (disputed)
analyse analyze
centre center
cheque check
colour color
counsellor counselor
criticise,criticize criticize
defence defense
doughnut donut
favour favor
fibre fiber
flavour flavor
fulfil fulfill
grey gray
honour honor
humour humor
jewellery jewellery,jewelry
judgement,judgment judgment
kerb curb
labour labor
license,licence (verb)
licence (noun) license (verb)
license (noun)
litre liter
metre meter
mould mold
neighbour neighbor
offence offense
practise (verb)
practice (noun) practice (verb)
practice (noun)
pretence pretense
programme program
pyjamas pajamas
realise,realize realize
savour savor
speciality specialty
theatre theater
travelled
travelling travelled,traveled
travelling,traveling
tyre tire
valour valor
稍微多了几个,随便选12个吧：）