English has borrowed words from other languages, too: the Spanish ‘guitar’, Italian ‘bank’, Czech ‘robot’, Chinese ‘tea’ or Arabic ‘coffee’ and ‘sugar’.
Today a lot of languages borrow words from English: job, CD, chips, pop-corn, supermarket, business, manager, leader, make-up, coach, outsider, hot-dog, hamburger…
There are differences between British English and American English in:

Grammar
: AE don’t use ‘the’ with ordinary numbers (AE: third – BE: the third)
: with words like family, class, team, crowd, the BE uses plural, the AE singular
: prepositions: BE: visit someone – AE: visit with someone
: BE: see you at the weekend – AE: see you on the weekend

Spelling
our-or
BE: neighbour – AE: neighbor
BE: colour – AE: color

tre-ter
BE: metre – AE: meter
BE: theatre – AE: theater

ll-l
BE: jewellery – AE: jewelry
BE: travelling – AE: traveling

Vocabulary
chemist - drug store
petrol – gasoline
trousers – pants
pants – underwear
taxi – cab
policeman – cob
public school – private school
state school – public school
secondary school – high school.