 Other features often cited as being nonstandard for an Indo-European language, such as the dedicated suffixes for different parts of speech, or the "-o" suffix for singular nouns, actually do occur in Indo‑European languages such as Russian.More pertinent is the accusative plural in "-jn".Esperanto is superficially similar to the non‑Indo‑European Hungarian and Turkish languages—that is, it is similar in its mechanics, but not in use.