According to the text, what truly constitutes 'death', and what are the 'nooses of death' that bind a person?

The text posits that what people call 'death' is merely the process of a manifest form returning to its unmanifest state. More importantly, Chapter 37 identifies the true 'nooses of death' as adharma (unrighteousness), ignorance, anger, and hatred. It is stated that a person who can completely overcome these negative qualities is the one who truly enters the heavenly world, suggesting these are the real bonds that prevent spiritual liberation, not the physical cessation of the body.