These teachings can be found in the various texts assigned to Hermes (the Hermetica). These scripts were written over a longer period (c. 300 BCE – 1200 CE) and may differ materially in both content and depth.
One of the most prominent contexts of the term refers to a particular subsection of Hermetic texts regarded as the 'philosophical' Hermetica. The most noteworthy sub-group is the Corpus Hermeticum (an assemblage of seventeen Greek Hermetic treatises recorded between c. 100 and c. 300 CE).
To separate it from the ideologies influenced by the several Hermetic works of an entirely different era and origin, this specific, ancient version of Hermetic philosophy is tagged as Hermetism. Hermeticism is a more open-ended representation.