Question: what are the characteristics and elements of trend?
Answer: Trend. ... 
Duration of time, Acceptability, Cultural Basis, Transitory increase or decrease. ... 
Duration of time. ... 
Acceptability. ... 
Cultural Basis. ... 
Transitory Increase or decrease. ... 
Driver, Enabler, Blocker. ... 
Microtrend, Macrotrend, Megatrend, Gigatrend, Nanotrend.