American English to British English: Letter N
Nail polish Nail varnish
Napkin Serviette
Narc Nark
Nation’s capital Country’s capital
Nationalize Nationalise
Naturalize Naturalise
Nautical mile Admiralty mile
Neighbor Neighbour
Neuron Neurone
News stand/Newsdealer Newsagent
Neytralize Neutralise
Night stick Truncheon
Nightgown Nightdress
Nightstick /billyclub (infml) Truncheon
Nipple on baby bottle Teat
Niter Nitre
nondefining Non-defining
Nonjudgmental Non-judgemental
Normalcy Normality
Normalize Normalise
Northward Northwards
Nose Hooter
Notarize Notarise
Noticeable Noticeable
Novemdecillion AE n+60 zeros Novemdecillion BE n+114 zeros
Have I missed anything? Send in your American/British differences now.