週
week
集中
concentration, focusing, centralization, integration
集団
group, mass
収穫
harvest, crop, fruits (of one's labors)
週間
week
週刊
weekly publication
収入
income, receipts, revenue, salary
速度
speed, velocity, pace, rate
大半
majority, more than half, most, largely, mainly
大会
convention, rally, conference, tournament