About Esperanto Language
According to Wikipedia.org, Esperanto is the world's most widely spoken international language. It is created by Polish ophthalmologist L. L. Zamenhof in 1887. The language was created to be used as the universal second language for international communication. Esperanto is spoken in Europe, East Asia, and South America. As a constructed language, Esperanto holds a middle ground between "naturalistic" constructed languages. Esperanto's vocabulary, syntax, and semantics are inspired by the Standard Average European languages. The vocabulary derives from Romance languages and is similar to many Germanic languages. The most notable features of the language are the prefixes and suffixes. The language is easy to adapt roots and can generate words, to make it possible to communicate effectively with a little set of words. Esperanto is the most successful international and has a large population of native speakers.
About Russian Language
According to Wikipedia.org, Russian is a popular East Slavic language. It is widely spoken in Russia and Eastern Europe. This is a part of the Indo-European language family and is among the four living East Slavic languages. Russian is the official language of Russia, Belarus, Kazakhstan, and Kyrgyzstan. Interestingly widely spoken in Ukraine, the Caucasus, Central Asia, and many other Baltic states. Russian is spoken by over 258 million speakers all over the world. It is written in the Cyrillic script. You can easily distinguish between consonant phonemes with palatal articulation. It has a combination of soft and hard sounds. This distinction is a prominent feature of Russian. Another aspect is the reduction of vowels that are not stressed. Some homographic words include замо́к (zamók – a 'lock') and за́мок (zámok – a 'castle'). You may not be able to indicate the pronunciation of uncommon words.