What are the main differences between Ruby and Ruby on Rails?
The question is about Ruby
Answer:
Ruby is a general-purpose programming language, while Ruby on Rails (often just called Rails) is a web application framework built on Ruby. Rails includes tools, libraries, and conventions for easier web application construction: routing, database interactions, and front-end integrations.
In other words, Ruby is the language, but Rails is the structured environment in which a developer can create applications using it. That being said, Ruby certainly doesn’t have to be used only with Rails for a great number of purposes, but Rails definitely makes Ruby particularly effective at web development.