trend 
/ˈtrɛnd/ noun
plural trends /ˈtrɛnd/ noun [count] 1 : a general direction of change : a way of behaving, proceeding, etc., that is developing and becoming more common
▪ the downward/upward trend of the stock market ▪ Digital technology is the latest/current trend in television. ▪ Teachers are trying to reverse the general trend [=tendency] of lower test scores. ▪ There is a disturbing/growing trend toward obesity in children. ▪ trends in fashion ▪ The director has set/started a (new) trend in moviemaking. [=other directors are copying the director's way of making movies] 2 : something that is currently popular or fashionable
▪ fashion trends
▪ the downward/upward trend of the stock market ▪ Digital technology is the latest/current trend in television. ▪ Teachers are trying to reverse the general trend [=tendency] of lower test scores. ▪ There is a disturbing/growing trend toward obesity in children. ▪ trends in fashion ▪ The director has set/started a (new) trend in moviemaking. [=other directors are copying the director's way of making movies]
▪ fashion trends
