What does the ending serve for?
The words in Russian consist of a stem and an ending. The basis of the word is the prefix, root and suffix (except form-building suffixes). They serve to form a word.
For what is the ending, if the word formsits basis? The ending serves to change the word, its conjugation and declination. The word change is necessary for the correct connection of the words in the sentence. These are the main end functions.
Let's look at the detailed examples:
|Case||Which question is answered||How does the ending change?|
|Nominative||Who! What?||Crocodile_ / Computer_|
|Genitive||Whom? What?||Crocodile / Computer|
|Dative||To whom? To what?||Crocodile / Computer|
|Accusative||Whom? What?||Crocodile / Computer_|
|Instrumental||By whom? Than?||Crocodile / Computer|
|Prepositional||About whom? About what?||About the crocodile / e computer|
The ending is necessary at declension of a word on cases for competent connection of words in the sentence. The ending shows in what sense and context the word is used at the moment.
Compare two sentences:
Option 1, with the use of cases: "What struck you so hard on the head? Who needed it? - With a hammer. A roommate. " The ending allows one word to convey important information - time is saved.
Option 2, if there were no endings: "What struck you so hard on the head?" Who needed it? - I hit the hammer. This was done by my neighbor, with whom we have one room for two. " Many unnecessary words are necessary to convey the necessary information.