What's the Difference Between Holiday, Vacation and Trip?

To blush is to get embarrassed or feeling embarrassed and have your cheeks and face go red. Rosy cheeks are a sign that you're youthful and you're... I don't know, it's just a good positive healthy sign. When we were prepping for this episode, Cassie was talking about how sometimes learners struggle to tell the difference between the words holiday, vacation and trip. How would you explain the difference of these three words?