Verbs ending in -'ize' or '-ise'
In Britain, some verbs end in either -ize or -ise. Both are used. In America, they always end in -ize.
examples : apologise/apologize organise/organize realise/realize
Regular - Irregular forms Some verbs have alternative regular and irregular past tense and past participle forms, for example : dream - dreamed or dreamt. In Britain, the irregular form is more often used, whereas in American English, there is a preference for the regular form.
Here are some of those verbs :
dream dreamed/dreamt learn learned/learnt spell spelled/spelt
spoil spoiled/spoilt and also: dive - dived - dived (GB) dive - dove - dived (US only)
The Pronoun 'one'
Americans do not often use 'one' to mean "people in general" nor do they use 'one's' or 'oneself'.
GB : One should look after one's health. US : You should look after your health. People should look after their health.