A landing page is meant to drive a specific action and capture data from a user, usually with a CTA (call to action). These pages usually have an eye-catching headline, and a short statement describing a solution to a problem. They can be customized to target specific audiences and deliver a specific message.
A website is a collection of connected web pages that are used to provide a service to a large group of users. Websites can combine multiple landing pages along with other content such as blogs, contact forms, etc. Websites have a broader range of information and functionality