consciousness vs state of mind

consciousness and state of mind both are nouns.

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

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

consciousness: an alert cognitive state in which you are aware of yourself and your situation
state of mind: the state of a person's cognitive processes

Other hypernyms of consciousness include cognitive state.

consciousness (noun)	state of mind (noun)
an alert cognitive state in which you are aware of yourself and your situation	the state of a person's cognitive processes
having knowledge of	a temporary psychological state