different between exudation vs exundation

English

exude +? -ation

exudation (countable and uncountable, plural exudations)

The act or process of exuding.
- 1943, “Out of the Fire,” Time, 16 August, 1943,^[1]
  In severe burns, the body loses large amounts of nitrogen, in the urine and by exudation from the burned body surface.
Something that is exuded.
- 2004, Alan Hollinghurst, The Line of Beauty, Bloomsbury, 2005, Chapter 7,
  The car was parked in close to the rustic fence, under the lime trees, and their sticky exudations had already stippled the windscreen.

Latin exundatio.

exundation (countable and uncountable, plural exundations)

An overflow, or overflowing abundance.
- 1691, John Ray, The wisdom of God Manifested in the Works of the Creation
  It is more worthy of the Deity to attribute the creation of the world to the exundation and overflowing of his transcendent and infinite goodness, which is, of its own nature, and in the very notion of it, most free, diffusive, and communicative.

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