This is the 55th most frequent Hungarian word.
mi
"What."
Possessive pronoun modifier: Indicates ownership 'our' relating something to the speaker and others.
Ez a mi házunk.
This is our house.
Pronoun: 'We' used to refer to the group including the speaker.
Mi mindent együtt csináltunk.
We did everything together.
Interrogative pronoun: 'What' used to ask about the identity of something.