活動【かつどう】
activity (of a person, organization, animal, volcano, etc.), action, movie (esp. during the silent movie period)
生活【せいかつ】
life, living, livelihood, (one's) living
活発【かっぱつ】
lively, active, vigorous, animated, brisk
復活【ふっかつ】
revival (of an old system, custom, fashion, etc.), restoration, return, comeback, resurrection, rebirth
活躍【かつやく】
activity (esp. energetic or successful), great efforts, active participation, walking about with great vigor
活用【かつよう】
practical use, application, conjugation, inflection
活力【かつりょく】
vitality, energy, dynamism
活字【かつじ】
printing type, movable type, printed text, print
活気【かっき】
energy, vigour, vigor, liveliness, spirit, life, animation
快活【かいかつ】
cheerful, lively, lighthearted
自活【じかつ】
self-support