What is the word for best friend in all the different languages?

Some examples include:

• Spanish: amigo/a
• French: meilleur(e) ami(e)
• German: bester Freund/beste Freundin
• Italian: migliore amico/a
• Japanese: ベストフレンド (besuto furendo)
• Russian: лучший друг (luchshiy drug)