Please translate the given English sentence to Hindi
भाषा संपर्क आम है, जिससे पारिवारिक वर्गीकरण कठिन हो जाता है-अक्सर यह स्पष्ट नहीं हो पाता कि शाब्दिक समानता अन्य भाषा से शब्द ग्रहण करने के कारण है या सामान्य मूल भाषा के कारण.
Language contact and creolization is common in the development of sign languages, making clear family classifications difficult it is often unclear whether lexical similarity is due to borrowing or a common parent language, or whether there was one or several parent languages, such as several village languages merging into a Deaf-community language.