XML is considered a programing language or another kind of language?

Question

XML is considered a programing language (like python, ruby, java, js, C ...) or not (like html, css, xhtml ...)

Answer 1

This is the wikipedia definition:
"In computing, Extensible Markup Language (XML) is a markup language that defines a set of rules for encoding documents in a format that is both human-readable and machine-readable."

Answer 2

it's a markup language like html is.

Answer 3

xml is a markup language that allows you to create your own data structure compatible with the web standards