hypothetical vs theoretical

hypothetical is a noun but theoretical is not a noun.

Word	Noun	Adjective	Verb	Adverb
hypothetical	Yes	Yes	No	No
theoretical	No	Yes	No	No

hypothetical (noun)	theoretical (noun)
a hypothetical possibility, circumstance, statement, proposal, situation, etc.

hypothetical (adjective)	theoretical (adjective)
based primarily on surmise rather than adequate evidence	concerned primarily with theories or hypotheses rather than practical considerations
	concerned with theories rather than their practical applications