malaise vs uneasiness

malaise and uneasiness both are nouns.

Word	Noun	Adjective	Verb	Adverb
malaise	Yes	No	No	No
uneasiness	Yes	No	No	No

As nouns, malaise and uneasiness are synonyms defined as:

malaise and uneasiness: physical discomfort (as mild sickness or depression)

Other synonyms of malaise include unease.

malaise (noun)	uneasiness (noun)
physical discomfort (as mild sickness or depression)	inability to rest or relax or be still
	the trait of seeming ill at ease
	embarrassment deriving from the feeling that others are critically aware of you
	feelings of anxiety that make you tense and irritable
	physical discomfort (as mild sickness or depression)