One of the recent trends in recycling right now is all-in-one recycling. All the paper, plastic, glass, and metal waste goes into one recycle bin, which is sorted at the factory. The argument is that it requires fewer trucks to pick it all up.
Construction work is usually seasonal. Many crops can only be grown during specific times during the year. Retail clerk positions are often seasonal. Package delivery personnel are often hired during the holidays.
A seasonal pattern exists when a series is influenced by seasonal factors (e.g., the quarter of the year, the month, or day of the week). Seasonality is always of a fixed and known period. Hence, seasonal time series are sometimes called periodic time series. A cyclic pattern exists when data exhibit rises and falls that are not of fixed period. The duration of these fluctuations is usually of at least 2 years.