uncertainty vs state of mind

uncertainty and state of mind both are nouns.

Word	Noun	Adjective	Verb	Adverb
uncertainty	Yes	No	No	No
state of mind	Yes	No	No	No

As nouns, state of mind is a hypernym of uncertainty; that is, state of mind is a word with a broader meaning than uncertainty:

Other hypernyms of uncertainty include cognitive state.

uncertainty (noun)	state of mind (noun)
being unsettled or in doubt or dependent on chance	the state of a person's cognitive processes
the state of being unsure of something	a temporary psychological state