different between sedulity vs superadvenient

English

sedul(ous) +? -ity, from Latin sedulitas.

sedulity (countable and uncountable, plural sedulities)

diligence, persistence
He approached his daily piano practice with sedulity.

super- +? advenient

superadvenient (comparative more superadvenient, superlative most superadvenient)

Coming upon; coming to the increase or assistance of something.
Coming unexpectedly.
- 1662, Henry More, An Antidote Against Atheism, Book II, A Collection of Several Philosophical Writings of Dr. Henry More, p. 56:
  "And therefore all things are in some measure obscure and intricate, that the sedulity of that divine Spark, the Soul of Man, may have matter of conquest and triumph, when he has done bravely by a superadvenient assistance of his God."

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