What is funnel in Google analytics?

In Google Analytics, a funnel is a navigation path (series of web pages) which you expect your website users to follow, to achieve website goals. A funnel is made up of a goal page(s) and one or more funnel pages (also known as the funnel steps).

Conversion funnel is a phrase used in e-commerce to describe the journey a consumer takes through an Internet advertising or search system, navigating an e-commerce website and finally converting to a sale.