different between blocking vs clogging

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.

clogging

clogging (plural cloggings)

The situation of something being clogged.
- 2002, M. Henze, Wastewater Treatment: Biological and Chemical Processes
  The biofilm is allowed to develop uninhibited which leads to local cloggings.
The material that clogs or obstructs.
- 1839, British Farmer's Magazine (volume 3, page 187)
  No cloggings, lumps of dirt, or underlocks should be suffered to be rolled up with the fleece, as such a practice is unfair to the purchaser, and by act of parliament there is a heavy penalty attached to those who are convicted of doing it.

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