What is the difference between diagenesis and lithification?

Lithification is simply conversion of lose sediments into a solid rock due to pressure. Digenesis is the process that sediments go through after deposition. It includes all …the chemical, physical and biological changes that sediments go through before, during and after lithification. It is important to remember that digenesis takes place at low temperature and pressure compare to metamorphism, which is solid state recrystallization of Igneous, sedimentary and other metamorphic rocks occurs at high temperature and pressure. (Samin Ali) (MORE)