Whim (noun) خواہش ، آرزو، وہم، فوری چاہت

a sudden desire or change of mind, especially one that is unusual or unexplained.
Example: “she bought it on a whim”
Penchant (noun) رغبت، رجحان

a strong or habitual liking for something or tendency to do something.
Example: “he has a penchant for adopting stray dogs”