Question

Many computer users and some operating systems call subdirectories ____.

Answer 1

A subfolder or a folder.

A subfolder or a subdirectory is a directory contained within another directory. It is a subfolder of another folder. Thus, a subfolder or subdirectories are two words that have more or less the same meaning. Example, all other folders contained in the root directory of the main directory in a file system is the subdirectory of the root directory.