activityThere were several police vans and a lot of activity in the area.
hubbubI couldn't find her with all the hubbub going on.
bustleI miss the bustle of the big city.
hustle and bustleShe got used to the hustle and bustle of daily life.
burst of activityIt's usually quiet in the shop, but occasionally we have a sudden burst of activity.
a hive of activityThe factory was a hive of activity.
actionIt was an action-packed thriller.
lifeThe city centre is always full of life on market days.
livelienessThe concerts were intended to bring some cultural liveliness to the town.
buzzBerlin has an incredible buzz about it.
whirlShe was caught up in a social whirl of parties and events.