Commonly used terms:
* Κατοικίδιο ζώο (katoikidio zo'o): This literally means "domestic animal" and is the most common and general term for pets in modern Greek.
* Σύντροφος (syn'trofos): Meaning "companion," this term is often used for pets, especially those seen as close friends or family members.
* Φίλος (filos): Meaning "friend," this is also used for pets, especially if they are considered loyal and loving companions.
Specific terms:
* Σκύλος (sky'los): Dog
* Γάτα (ga'ta): Cat
* Πουλί (pouli): Bird
Context is key: The best word to use depends on the context and the specific animal you are talking about. For example, if you are referring to a dog, "σκύλος" would be the most appropriate. But if you are talking about a pet in general, "κατοικίδιο ζώο" is the safest bet.