<human>:  In the word ‘Lushka’, why is it spelled with a u instead of a y?
<bot>: The word lushka is derived from the Russian word lus (<unk>леск), which means a “shade tree”. The spelling of the word is derived from the letter u, which is pronounced like the English w, as in “wow” or “wonder”. The letter u is also used in words like “juice” and “pupil”.