This is the 4891st most frequent Russian word.
кальций
Calcium.
The word 'кальций' is used to refer to the chemical element essential for bone health.
Кальций необходим для укрепления костей.
Calcium is essential for strengthening bones.
In this sentence, 'кальций' refers to the nutrient found in milk.
В молоке содержится много кальция.
Milk contains a lot of calcium.
Here, 'кальций' denotes a pharmaceutical form of calcium as a supplement.