Trio russian

• тро́йка

  troika / trio, alliance of three, three people working together, three-piece-suit

  number three

  grade of three

  three (in card games)

• тро́ица

  Trinity, Whitsun, Whitsunday, trio

• троя́к

  satisfactory grade, C

  three-ruble note

  trio, triplet, set of three

• три́о

  trio

• трио́д

  triode