Semantic is a UI component framework based around useful principles from natural language.
Semantic UI is a responsive UI framework designed for theming. It allows developers to build beautiful websites quickly, with concise HTML and intuitive javascript. The framework is built with EM values for responsive design and is flexbox friendly. Semantic UI is production ready and can be integrated with frameworks like React, Angular, Meteor, and Ember.
A UI kit provides developers with a set of reusable components that can be easily integrated into a website or application. These components are pre-designed with consistent styling and functionality, allowing developers to save time and effort in the design and development process. UI kits can be either custom-built or third-party, and often include components for buttons, forms, typography, icons, and more.
Gulp.js is an old but popular site building tool that automates various repetitive development tasks in web development, such as compiling Sass, minifying JavaScript, and optimizing images.