proficient vs adept

proficient is not a noun while adept is a noun.

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

As adjectives, proficient and adept are synonyms defined as:

proficient and adept: having or showing knowledge and skill and aptitude

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

proficient (noun)	adept (noun)
	someone who is dazzlingly skilled in any field

proficient (adjective)	adept (adjective)
of or relating to technique or proficiency in a practical skill	having or showing knowledge and skill and aptitude
having or showing knowledge and skill and aptitude