1.HTML & CSS:
it is used for web development.
it is used for web development application.
it is mostly used to create browser games and for web development.
it is used for web development, software and game development.
it is mostly used for Game Development. Such as Unreal Engine.
it is used for app development, desktop app, websites and for game development.
it is mostly used for app development, iOS apps, mac, Apple TV.
it is a programming language and used widely in data analytic, data scientists.