Based on Chapter 37, what is the philosophical definition of 'death', and what are considered the 'nooses of death'?

According to the teachings in Chapter 37, death is defined as the process by which something that has come into form from the unmanifest returns to the unmanifest state. It is not an end but a transition. The chapter further elaborates on the spiritual obstacles that bind a soul, referring to them as the 'nooses of death'. These are explicitly identified as Adharma (unrighteousness), ignorance, anger, and hatred. The text suggests that only by entirely crossing these can one enter the true heavenly world.