psychological state vs mental condition

psychological state and mental condition both are nouns.

Word	Noun	Adjective	Verb	Adverb
psychological state	Yes	No	No	No
mental condition	Yes	No	No	No

As nouns, psychological state and mental condition are synonyms defined as:

psychological state and mental condition: (psychology) a mental condition in which the qualities of a state are relatively constant even though the state itself may be dynamic

Other synonyms of psychological state include mental state, psychological condition.

psychological state (noun)	mental condition (noun)
(psychology) a mental condition in which the qualities of a state are relatively constant even though the state itself may be dynamic	(psychology) a mental condition in which the qualities of a state are relatively constant even though the state itself may be dynamic