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.
About Slovak Language
According to Wikipedia.org, Slovak is a West Slavic language. It is spoken by the Czech–Slovak group. It is written in Latin script. It belongs to the Indo-European language family and is one of the most popular Slavic languages. It is spoken by approximately 5 million people. Slovak is the native language of ethnic Slovaks. It is the official language of Slovakia and is one of the 24 official languages in the European Union. Slovak is similar to Czech and Polish. Slovak is a fusional language and has a complex system. The vocabulary of Slovak is extensively influenced by Latin and the German language. The Czech–Slovak group developed the language in the high medieval period. It became popular during the mid-19th century. Slovak is spoken in the United States, the Czech Republic, Argentina, Serbia, Ireland, Romania, Poland, Canada, Hungary, Germany, Croatia, Israel, the United Kingdom, Australia, Austria, Ukraine, Norway, and many other countries in the world.