Covers questions about different cases. Case is a morphological category of nouns and adjectives that signals their relation to other words in a sentence.

Covers questions about different cases. Case is a morphological category of nouns and adjectives that signals their relation to other words in a sentence.

For example, words "одна машина" in "Одна машина остановилась перед другой машиной" are in nominative case and signal that "одна машина" is the subject of "остановилась"; "другой машиной" is in instrumental case and signals that this word is in certain relation to preposition "перед". Both "машина" and "машиной" are forms of the same word (same entry in a dictionary).