BRITISH ENGLISH vs AMERICAN ENGLISH

The difference between the British English (BrE) and American English (AmE) can basically be distinguished in:

1) VOCABULARY: a different word or use of a word for a different meaning. Some examples:

There are many more:

British:
HOLIDAY / LIFT / SWEETS   are  in AmE?

American: 
COOKIE / FALL / SOCCER are in BrE?
Do you know any more? 
Check answers to previous questions and other examples in the link below.
Link: BRITISH ENGLISH AMERICAN ENGLISH VOCABULARY DIFFERENCES.

2) SPELLING: The same word is spelt in a different way. The general idea is that American English has a much more simple and logical spelling from a Spanish point of view.

Link: BRITISH ENGLISH AMERICAN ENGLISH SPELLING DIFFERENCES. (Wikipèdia)

3) GRAMMAR. Here are some basic grammar differences:

& 4) PRONOUNCIATION. As you can seen what happens in Spanish being spoken by a Spaniard or an Argentinian, or even a person from Galicia, or Madrid and one from Andalucia, all have different accents. Language pronunciation changes from one geographical area to another. 

Here's a video:

For other specific differences, check on this link, which includes all:
Link: GENERAL DIFFERENCES BRITISH ENGLISH vs AMERICAN ENGLISH.