expertnesses

ability ableness adroitness aptness art cleverness command competence craft cunning deftness dexterity dodge facility finesse goods ingeniousness judgment knack know-how line makings oil one's thing prowess readiness savvy sharpness skill skillfulness stuff

ignorance inexpertness lack

adeptness adroitness art craft expertise facility gift knack know-how mastery proficiency savvy skill skillfulness specialization

ignorance inability lack want