language is sometimes called Old Slavic, which may be confused with the distinct Proto-Slavic language. Bulgarian, Croatian, Macedonian, Serbian, Slovene and Slovak linguists have claimed Old Church Slavonic; thus OCS has also been variously called Old Bulgarian, Old Macedonian, Old Slovenian, Old Croatian, or Old Serbian, or even Old Slovak. The commonly accepted terms in modern English-language Slavic studies are Old Church Slavonic and Old Church Slavic.

The