misgiving vs apprehension

misgiving and apprehension both are nouns.

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

As nouns, misgiving and apprehension are synonyms defined as:

misgiving (noun)	apprehension (noun)
doubt about someone's honesty	the act of apprehending (especially apprehending a criminal)
painful expectation	the cognitive condition of someone who understands
uneasiness about the fitness of an action (particularly for reasons of ethics, morals or propriety)	painful expectation
	fearful expectation or anticipation