misgiving vs incertitude

misgiving and incertitude both are nouns.

Word	Noun	Adjective	Verb	Adverb
misgiving	Yes	No	No	No
incertitude	Yes	No	No	No

As nouns, incertitude is a hypernym of misgiving; that is, incertitude is a word with a broader meaning than misgiving:

Other hypernyms of misgiving include doubt, doubtfulness, dubiety, dubiousness, uncertainty.

misgiving (noun)	incertitude (noun)
doubt about someone's honesty	the state of being unsure of something
painful expectation
uneasiness about the fitness of an action (particularly for reasons of ethics, morals or propriety)