Jekyll is a static site generator written in Ruby that allows you to create simple, fast, and secure websites without the need for a database.

A template or theme refers to a pre-designed layout or structure that provides a basic framework for building a specific type of application or website. It typically includes good design, placeholder content and functional features, allowing developers to customize and fill in the details according to their specific needs.

A website that uses Ruby gems to streamline development workflows and enhance functionality. This includes features such as easy installation and updates, robust and reliable performance, and support for a wide range of plugins and extensions.