In this article, I will be explaining the difference between a dimension and a metric.
A dimension is any kind of data that can be used to describe what you are tracking with words.
Device type, browser, browser version
Vendor, program, campaign
Country, city, language
A metric is data that has a numerical value. A metric is anything you can count.
Bounce rate, intent rate, visitor count
Conversion rate, number of pages
In this table, Device and Country are both dimensions because they do not have a numerical value. Bounce Count and Visit Count are metrics because the data is countable.