Subsite vs. Website

Subsitenoun

A website that is subordinate to another website and hosted in its entirety under that site's domain name.

Websitenoun

(Internet) A collection of interlinked web pages on the World Wide Web that are typically accessible from the same base URL and reside on the same server.

Websitenoun

a set of related web pages located under a single domain name

Website

A website (also written as web site) is a collection of web pages and related content that is identified by a common domain name and published on at least one web server. Notable examples are wikipedia.org, google.com, and amazon.com.