high, high-pitched
low
loud
angry
the angry buzz of a wasp

annoying, incessant
background
the background buzz of conversation

hear
create, generate (both figurative)
The movie, due out next summer, is already creating a buzz.

surround (figurative)
An intense buzz surrounded the event.

buzz of (figurative)
I love the buzz (= excitement) of a big city.

a buzz of conversation, a buzz of excitement
There was a buzz of excitement all around the room.

Buzz is used with these nouns as the subject:
bee, clock, fly, helicopter, insect, intercom, mind, mosquito, wasp