1. The excited chatter of the crowd created a buzz in the air. (This uses "buzz" as a noun meaning a feeling of excitement)
2. The bee buzzed around the flower, collecting pollen. (This uses "buzz" as a verb meaning to make a humming sound)
3. The new product launch generated a lot of buzz online. (This uses "buzz" as a noun meaning widespread attention or excitement)
4. I could feel the buzz of anticipation as I waited for the results. (This uses "buzz" as a noun meaning a feeling of excitement or anticipation)