7 useful 2 letter words to use in Scrabble

1. AA - Volcanic rock consisting of angular blocks of lava with a very rough surface
2. HM - Sound made to express hesitation of doubt
3. KY - Scots word for cows
4. MM - Expression of enjoyment of taste or smell
5. QI - Variant of CHI, the 22nd letter of the Greek alphabet
6. XU - Vietnamese currency unit
7. YU - Jade