This is the 12509th most frequent Russian word.
колбасу
"Колбасу" means "sausage" in English.
The word 'колбасу' in this sentence is in the accusative case, indicating the direct object of the action 'bought'.
Я купил колбасу в магазине.
I bought sausage at the store.
Here, 'колбасу' is again in the accusative case, as it is the direct object of the verb 'обожает' (loves).
Моя сестра обожает колбасу.
My sister loves sausage.
In this instance, 'колбасу' is used in the accusative case as the object of the action 'нарезали' (sliced).