psyche vs subconscious

psyche and subconscious both are nouns.

Word	Noun	Adjective	Verb	Adverb
psyche	Yes	No	No	No
subconscious	Yes	Yes	No	No

As nouns, subconscious is a hyponym of psyche; that is, subconscious is a word with a more specific, narrower meaning than psyche:

psyche: that which is responsible for one's thoughts, feelings, and conscious brain functions; the seat of the faculty of reason
subconscious: psychic activity just below the level of awareness

Other hyponyms of psyche include noddle, tabula rasa, ego, unconscious, unconscious mind, subconscious mind.

psyche (noun)	subconscious (noun)
that which is responsible for one's thoughts, feelings, and conscious brain functions; the seat of the faculty of reason	psychic activity just below the level of awareness
the immaterial part of a person; the actuating cause of an individual life

psyche (adjective)	subconscious (adjective)
	just below the level of consciousness