* Τι (ti): This is the most common translation and is used as an interrogative pronoun meaning "what" when asking about something. For example, "What is this?" would be "Τι είναι αυτό;" (Ti ine afto?).
* Ποιο (poio): This means "which" or "what (specific one)" and is used when asking about a selection from a group. For example, "What book did you read?" could be "Ποιο βιβλίο διάβασες;" (Poio vivlio diavases?). The masculine form is shown here; there are feminine and neuter forms as well.
* Ποια (poia): This is the feminine form of "poio".
* Ποιο (poio) / Ποια (poia) / Ποια (poia): These are also used when asking "What kind of...?" For example, "What kind of car is that?" would use one of these depending on the gender of the word "car".
Therefore, you need to provide the English sentence containing "what" for a more accurate Greek translation.