  The main aim of this paper is to discuss the structure of coretractble and
mono-coretractble modules. We have provided the characterizations of
coretractable modules in terms of Kasch ring, CS modules, mono-coretractble
modules, projective modules, epi retractable modules, and retractable modules.
We have also discussed some equivalent condition related with coretractbele and
mono-coretractble modules.
