esoteric vs mysterious

esoteric and mysterious both are adjectives.

Word	Noun	Adjective	Verb	Adverb
esoteric	No	Yes	No	No
mysterious	No	Yes	No	No

esoteric (adjective)	mysterious (adjective)
confined to and understandable by only an enlightened inner circle	having an import not apparent to the senses nor obvious to the intelligence; beyond ordinary understanding
	of an obscure nature