What is difference between HTML and amp xhtml?

HTML (HyperText Markup Language) is the standard markup language used to create web pages, while XHTML (Extensible HyperText Markup Language) is a stricter and more XML-compliant version of HTML. The main differences lie in syntax and structure; XHTML requires proper nesting of elements, closing tags for all elements, and adherence to case sensitivity. This makes XHTML more robust for use in applications that require strict data handling, whereas HTML is more lenient and easier for general web development.