Russian declension of nouns
involves 6 cases
: nominative, genitive, dative, accusative, instrumental, prepositional
, in two numbers singular and plural
(some Russian nouns are always plural or always singular
), and absolutely obeying 3 grammatical genders
: masculine, feminine, and neuter
. Russian nouns are either animate or inanimate
. Russian adjectives
decline too; they agree with nouns in gender, number and case.
Russian accusative case is used to express a weight:, sometimes with the prepositions: в (во), на, за, про, через, сквозь, о (об, обо), с (со).