adept vs expert

adept and expert both are nouns.

Word	Noun	Adjective	Verb	Adverb
adept	Yes	Yes	No	No
expert	Yes	Yes	No	No

As adjectives, adept and expert are synonyms defined as:

Other synonyms of adept include good, practiced, proficient, skilful, skillful.

As nouns, expert is a hypernym of adept; that is, expert is a word with a broader meaning than adept:

adept (noun)	expert (noun)
someone who is dazzlingly skilled in any field	a person with special knowledge or ability who performs skillfully

adept (adjective)	expert (adjective)
having or showing knowledge and skill and aptitude	having or showing knowledge and skill and aptitude
	of or relating to or requiring special knowledge to be understood