fad
ファッド
bandwagon effect
Coolhunting
Crowd psychology
Google Trends
Market trend
Memetics
Peer pressure
Retro style
social mania
15 minutes of fame
Viral phenomenon
Bellwether (1996 novel)
/suto3/google.iconfad
image fad
define fad
wikipedia fad
weblio fad
kotobank fad
jisho fad