Words with different meanings in American and British English
Solution 1:
Fanny: buttocks (AE); vagina (BE)
Not an insignificant distinction. Bless the soul who confuses the two in practice.
Solution 2:
Wikipedia: List of words having different meanings in British and American English: A–L
Solution 3:
vest
British: undershirt
American: waistcoat -- a sleeveless article of clothing for the upper body
Solution 4:
Pants
British: underwear
American: slacks, trousers, or jeans