Mobile development refers to the creation of applications that run on mobile devices such as smartphones and tablets. The most popular programming language used for mobile development is Java, Kotlin, Swift, PHP js node, and Objective-C. Java is primarily used for Android app development, while Swift and Objective-C are used for iOS app development.
Web development, on the other hand, refers to the creation of websites and web applications that are accessed through web browsers on desktop and mobile devices. Web development is the creation of websites and web applications that are accessed through web browsers using languages such as HTML, CSS, and JavaScript.