Where are documents created in Microsoft word?
While being edited (before it's intentionally saved) Word
documents are stored in the system's random access memory
(RAM).
Once the file is "saved" (*file, save as*), it is stored in the
selected memory device. Saving a file to My Documents, for example,
would save to the hard drive, solid state drive, jump drive, etc:
the actual hardware where "My Documents" is located.