未可同日而語 [－－－－－语]

Jyutping mei6 ho2 tung4 jat6 ji4 jyu5
Pinyin wèi kě tóng rì ér yǔ

Definitions (CC-CEDICT)
  1. lit. mustn't speak of two things on the same day (idiom); not to be mentioned in the same breath
  2. incomparable