Any word(s) can replace "experience (noun) "?

knowledge





acquaintance, action, actuality, background, caution, combat, contact, doing, empiricism, evidence, existence, exposure, familiarity, forebearance, intimacy, involvement, inwardness, judgment, know-how, maturity, observation, participation, patience, perspicacity, practicality, practice, proof, reality, savoir-faire, seasoning, sense, skill, sophistication, strife, struggle, training, trial, understanding, wisdom, worldliness

'Conversant with'?