A holiday is a special day for religious or cultural reasons - such as Christmas, Easter, New Year's Eve, and your country's Independence Day. Some holidays are also official days off from work, and others are not.

A vacation is when you take multiple days off from work/school to relax and/or travel. However, American English speakers call this a vacation and British English speakers call this a holiday:

My parents are on vacation in Asia. (American English)

My parents are on holiday in Asia. (British English)

World Record Facts
Motorcycle stunt rider Evel Knievel of Montana, USA, holds the record for broken bones – he suffered 435 fractures while working as stunt rider.      .. More >>