JavaScript is a prototype-based scripting language that is dynamic, weakly typed and has first-class functions. It is a multi-paradigm language, supporting object-oriented, imperative, and functional programming styles. wikipedia.org

Web development is a broad term for the work involved in developing a web site for the Internet (World Wide Web) or an intranet (a private network).

The front end is responsible for collecting input in various forms from the user and processing it to conform to a specification the back end can use. The front end is an interface between the user and the back end. wikipedia.org

Web design is the process of planning and creating a website. Text, images, digital media and interactive elements are used by web designers to produce the page seen on the web browser. wikipedia.org

Jewelry is a form of personal adornment, such as brooches, rings, necklaces, earrings, and bracelets. wikipedia.org

React is an open-source JavaScript library for creating user interfaces that aims to address challenges encountered in developing single-page applications. wikipedia.org

Electronic commerce, commonly known as e-commerce refers to the buying and selling of products or services over electronic systems such as the Internet and other computer networks.

A Web service is a method of communication between two electronic devices over a network. wikipedia.org