uneasiness vs discomfort

uneasiness and discomfort both are nouns.

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

As nouns, discomfort is a hypernym of uneasiness; that is, discomfort is a word with a broader meaning than uneasiness:

Other hypernyms of uneasiness include uncomfortableness.

uneasiness (noun)	discomfort (noun)
inability to rest or relax or be still	an uncomfortable feeling of mental painfulness or distress
the trait of seeming ill at ease	the state of being tense and feeling pain
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)