qualm vs misgiving

qualm and misgiving both are nouns.

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

As nouns, qualm and misgiving are synonyms defined as:

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

Other synonyms of qualm include scruple.

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