HTML stands for HyperText Markup Language. HTML is used to create web pages and web applications. HTML is widely used language on the web. We can create a static website by HTML only.
CSS stands for Cascading Style Sheet.CSS is used to design HTML tags.CSS is a widely used language on the web.HTML, CSS and JavaScript are used for web designing. It helps the web designers to apply style on HTML tags.
Bootstrap is the most popular HTML, CSS and JavaScript framework for developing a responsive and mobile friendly website.It is absolutely free to download and use.It is a front-end framework used for easier and faster web development.
JavaScript is used to create client-side dynamic pages.JavaScript is an object-based scripting language which is lightweight and cross-platform.JavaScript is not a compiled language, but it is a translated language.
jQuery is a small and lightweight JavaScript library.jQuery is cross-platform.jQuery means "write less do more".jQuery simplifies AJAX call and DOM manipulation.