what does the word "empirical" mean in the doc of density() function?

I am new to statistics.
The doc of density() function says The algorithm used in density.default disperses the mass of the empirical distribution function over a regular grid of at least 512 points ...
what does the word "empirical" mean? what is the definition of "empirical distribution" ?
Is there a theoretical distribution?
what is the relationship of "empirical distribution" and "theoretical distribution"?
I googled a lot and didn't get answers with elaborate examples or authoritative reference(say a college textbook)
thank in advance.

It's the distribution of the observed data

Two resources I use when encountering mysterious math terms: Wikipedia and Wolfram MathWorld. Wikipedia may surprise you with how detailed but useful the content is. Expect to go deep into the "related article"-holes before you fully understand something.

This topic was automatically closed 21 days after the last reply. New replies are no longer allowed.

If you have a query related to it or one of the replies, start a new topic and refer back with a link.