"Hello" is widely considered to be one of the most common phrases used worldwide as a greeting in various languages and cultures.

Usually very basic definitions, terms and phrases in English, but French is also common.

An anaptyxis is the insertion of a vowel as an infix in words - such as is common in English as well as various Slavic languages.

No. Virtually all languages on Earth have foreign words and phrases.

The languages of India and the languages of Europe have a common source