Synonyms of proficiencies

1 Syllable
knack, chops, skill, stuff, oil
2 Syllables
moxie, know-how, learning, savvy, makings, talent, headway, progress
3 Syllables
advance, mastery, knowledge, expertness, formula
4 Syllables
facility, expertise, competence, advancement, dexterity, accomplishment, efficiency, aptitude