ἀσκητὴς, firstly an artisan, came to=ἀθλητὴς, and by ecclesiastical writers is used for hermit or monk.  The ἐρημιτης, or desert dweller, lives either in retreat as an anchoret, or solitary, μοναχός, whence “monk;” or in common with others, in a κοινόβιον, as a “cœnobite.”  All would be ἀσκηταί.