misgiving vs qualm

misgiving and qualm both are nouns.

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

As nouns, misgiving and qualm are synonyms defined as:

misgiving and qualm: uneasiness about the fitness of an action (particularly for reasons of ethics, morals or propriety)

Other synonyms of misgiving include scruple.

misgiving (noun)	qualm (noun)
doubt about someone's honesty	uneasiness about the fitness of an action (particularly for reasons of ethics, morals or propriety)
painful expectation	a mild state of nausea
uneasiness about the fitness of an action (particularly for reasons of ethics, morals or propriety)