This is the 12671st most frequent Russian word.
корицей
The Russian word "корицей" means "cinnamon" (in the instrumental case).
Here, 'корицу' refers to cinnamon as an ingredient used in cooking.
Я добавил корицу в тесто для булочек.
I added cinnamon to the dough for the rolls.
Here, 'корица' is used to describe cinnamon as a component in a beverage.
Она любит чай с корицей и имбирем.
She likes tea with cinnamon and ginger.
Here, 'корицы' signifies cinnamon as a scent or fragrance.