squeamishness vs qualm

squeamishness and qualm both are nouns.

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

As nouns, squeamishness and qualm are synonyms defined as:

Other synonyms of squeamishness include queasiness.

squeamishness (noun)	qualm (noun)
the trait of being excessively fastidious and easily shocked	uneasiness about the fitness of an action (particularly for reasons of ethics, morals or propriety)
a mild state of nausea	a mild state of nausea