Hello:
* Cześć: (pronounced "chesh") - This is the most common and informal way to say hello.
* Dzień dobry: (pronounced "dzen doh-bree") - This is the formal way to say hello, similar to "good day".
* Witam: (pronounced "vee-tam") - This is a more formal and polite way to say hello, similar to "greetings".
* Witaj: (pronounced "vee-ty-ah") - This is an informal but polite way to say hello, used between friends and family.
Goodbye:
* Do widzenia: (pronounced "doh vee-dzen-ya") - This is the most common and informal way to say goodbye.
* Na razie: (pronounced "nah rah-zee-ay") - This means "for now" and is similar to "see you later".
* Do zobaczenia: (pronounced "doh zo-bah-chen-ya") - This means "until we see each other again" and is a more formal way to say goodbye.
* Pa: (pronounced "pah") - This is a very informal and common way to say goodbye, similar to "bye".
Things to keep in mind:
* The formality of your greeting and farewell depends on the situation and the person you are speaking to.
* When speaking to someone older or in a formal setting, use the more formal greetings and farewells.
* When speaking to friends and family, you can use the more informal greetings and farewells.
I hope this helps!