Bustle or prosperity: a state of liveliness and commercial prosperity (often used in compounds like 繁華街 meaning a bustling commercial district).
夜の繁華街は週末になると特に賑やかだ。
The nightlife district gets especially lively on weekends.
かつてこの港町は繁華を極めたと言われている。
It is said that this port town once reached the height of prosperity.
観光地の繁華は季節によって変わることが多い。
The bustle of tourist spots often varies by season.