勢力【せいりょく】
influence, power, might, strength, potency, force, energy
協力【きょうりょく】
cooperation, collaboration, help, support
努力【どりょく】
effort, exertion, endeavour, endeavor, hard work, striving
武力【ぶりょく】
armed might, military power, the sword, force
有力【ゆうりょく】
influential, prominent, strong, likely, plausible, potent
実力【じつりょく】
(real) ability, true strength, merit, efficiency, competency, arms, force
原子力【げんしりょく】
atomic energy, nuclear power
権力【けんりょく】
(political) power, authority, influence
能力【のうりょく】
ability, faculty
暴力団【ぼうりょくだん】
bōryokudan, gangster organization (organisation), crime syndicate, yakuza
圧力【あつりょく】
pressure, stress, pressure (e.g. political), coercion, arm-twisting
全力【ぜんりょく】
all one's power (strength, energy, efforts), one's utmost
魅力【みりょく】
charm, fascination, glamour, glamor, attraction, appeal
強力【きょうりょく】
powerful, strong
暴力【ぼうりょく】
violence, mayhem
体力【たいりょく】
stamina, endurance, physical strength, resilience, resistance to disease, strength of an organization (e.g. profitability, productivity, economic clout, stability, growth potential)
力士【りきし】
sumo wrestler, rikishi, strong man, Deva king
活力【かつりょく】
vitality, energy, dynamism
出力【しゅつりょく】
output (electrical, signal, etc.)
迫力【はくりょく】
impressiveness, impact, force, intensity, appeal, strength, punch, edge, vigor