qualm vs queasiness

qualm and queasiness both are nouns.

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

As nouns, qualm and queasiness are synonyms defined as:

Other synonyms of qualm include squeamishness.

qualm (noun)	queasiness (noun)
uneasiness about the fitness of an action (particularly for reasons of ethics, morals or propriety)	inability to rest or relax or be still
a mild state of nausea	a mild state of nausea