Document x Documentation: Qual a diferença?

Hi there,

Document:
A document is the actual piece of paper or the computer file that contains the information. It is countable and it is also a verb.
I.e.: The scientists documented the lab experiments to prove the herb's medicinal properties

Documentation:
Documentation is the act of writing that information down.
Often used to describe the gathering and compilation of information from studies or research. It is NON-countable and it is NOT a verb.
I.e.: This is just one report, where is the documentation for the whole project.

Source: HiNative, Stackexchange

Cheers!