
철 (계절)
장마철 = monsoon season
김장철 = kimchi making season
휴가철 = holiday season
관광철 = tourist season
복숭아철 = peach season
포도철 = grape season
철에 따라 피는 꽃 = seasonal flowers
경치는 철에 따라 바뀐다 = the scenery changes from season to season

철 (계절)
장마철 = monsoon season
김장철 = kimchi making season
휴가철 = holiday season
관광철 = tourist season
복숭아철 = peach season
포도철 = grape season
철에 따라 피는 꽃 = seasonal flowers
경치는 철에 따라 바뀐다 = the scenery changes from season to season

Calculate, plan
계산 = calculation
합계(하다) = total, to add up
시계 = watch (timepiece)
계획(하다) = plan

Continue, adopt
계속(하다) = to continue
계모 = stepmother
계부 = stepfather

Rank, stairs
계급 = rank, class
단계 = stage of development
계단 = stairs

Season
계절 = season
사계 = the four seasons
동계 = the winter season
하계 = the summer season
*올 is not a word by itself when it has this meaning