genius

As a noun genius is

genius (extraordinary mental capacity).

As nouns the difference between genius and douchebag

is that genius is genius (extraordinary mental capacity) while douchebag is a sterile container which holds the fluid used for giving a vaginal douche.

As nouns the difference between proficiency and genius

is that proficiency is ability, skill, competence while genius is genius (extraordinary mental capacity).

As nouns the difference between knack and genius

is that knack is a traditional swedish toffee prepared at christmas while genius is genius (extraordinary mental capacity).

As a verb knack

is .

As nouns the difference between expertise and genius

is that expertise is great skill or knowledge in a particular field or hobby while genius is someone possessing extraordinary intelligence or skill; especially somebody who has demonstrated this by a creative or original work in science, music, art etc.

As an adjective genius is

ingenious, very clever, or original.

As nouns the difference between aptitude and genius

is that aptitude is natural ability to acquire knowledge or skill while genius is genius (extraordinary mental capacity).

As nouns the difference between ability and genius

is that ability is (obsolete) suitableness while genius is genius (extraordinary mental capacity).

As nouns the difference between qualification and genius

is that qualification is a clause or condition which qualifies something; a modification, a limitation while genius is genius (extraordinary mental capacity).

As nouns the difference between Competence and genius

is that Competence is skill while genius is genius (extraordinary mental capacity).

As nouns the difference between facility and genius

is that facility is the fact of being easy, or easily done; absence of difficulty, simplicity while genius is genius (extraordinary mental capacity).