different between blocking vs devascularization

English

blocking

blocking (countable and uncountable, plural blockings)

The act by which something is blocked; an obstruction.
- 1973, Oliver Sacks, Awakenings
  Miss H.'s voice was clear and intelligible, although it alternated between vocal blockings and extreme vocal hurry, every clause being jetted out suddenly, and rapidly decaying into aphonia.
The precise movement and positioning of actors in order to facilitate a performance (originally planned using miniature blocks).
Blocks used to support (a building, etc.) temporarily.
(computing) A feature that prevents a keyboard from registering multiple simultaneous keypresses that would cause ghosting.

de- +? vascularization

devascularization (plural devascularizations)

The destruction or blocking of blood vessels and concomitant loss of blood supply to an organ

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