促進【そくしん】
promotion, acceleration, encouragement, facilitation, spurring on
促す【うながす】
to urge, to encourage, to press, to prompt, to draw (attention to), to stimulate (e.g. growth), to hasten (e.g. development), to quicken, to accelerate, to promote
催促【さいそく】
pressing, urging, demanding, demand
督促【とくそく】
urge, demand, importunity