Common Words:
* Pizza
* Puzzle
Less Common Words:
* Fizz (a fizzy drink)
* Buzz (a humming sound)
* Dazzle (to shine brightly)
* Sizzles (makes a hissing sound)
* Fuzz (soft, short hairs)
Proper Nouns:
* Izzy (a common nickname)
* Zizz (a brief sleep)
* Jizz (a slang term for semen)
Technical Terms:
* Schizzo (slang for schizophrenia)
It's important to note that the use of "zz" is often restricted to specific words, and it's not a common letter combination in English.