This is the 6705th most frequent Russian word.
rak
The Russian word "рак" means "cancer" (both the disease and the zodiac sign) or "crayfish."
'Рак' refers to the animal, specifically a crayfish.
Рак плавает в реке.
The cancer swims in the river.
'Рак' refers to the illness, cancer.
Человеку поставили диагноз рак.
The person has been diagnosed with cancer.
'Рак' refers to the astrological zodiac sign.