What's the difference between xhtml and html 5?

Answer 1

XHTML is a version of HTML wherein related to XML. It is used for the developers to have a constant way of coding because of it is more strict.
Then comes the newest version which is HTML5 that doesn't need a strict coding to run.
Futhermore there is what we call XHTML5. Just use google to gather more information.

Answer 2

xhtml is a stricter (syntax wise) version of html used to store data for a program.
5html is the newest version of html which is used to structure websites.