Semantic difference between διάνοια and πρόθεσις (?)

Michael Zwingli

Civis Illustris

  • Civis Illustris

Both of these seem to mean “an intent”, “a plan”, “a purpose”. Is/was there any shade of difference in the meaning of these two words? Etymologically, διάνοια seems a more subjective term, focusing more on the mind of the subject of an implied (mental) action, while πρόθεσις seems to deal more directly with the object of the mental action. Did this difference result in any difference in meaning or in usage by Greek writers?
 
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