different between cleverness vs propensity

English

clever +? -ness

cleverness (countable and uncountable, plural clevernesses)

From propense (“inclined, disposed”) +? -ity, the former from Latin pr?pensus, perfect passive participle of pr?pende?.

propensity (countable and uncountable, plural propensities)

An inclination, disposition, tendency, preference, or attraction.
- 1902, William James, The Varieties of Religious Experience, Lecture I:
  To the psychologist the religious propensities of man must be at least as interesting as any other of the facts pertaining to his mental constitution. It would seem, therefore, that, as a psychologist, the natural thing for me would be to invite you to a descriptive survey of those religious propensities.

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