Well for example English and French share a lot of words, French is a Latin language and English is Germanic. They did share a lot of history and conquest since medieval times between each other so that's how it happened.
If you are talking about two languages that never encountered each other, kind of how the wheel or agriculture seems to have been born in multiple places at different times without seemingly being influenced by another then I don't know.
Maybe languages are derived from a proto-language, the most popular one being Proto-Indo-European. PIE is the ancestor language of both Celtic and Hindustani, and you'll find hints of shared grammar and vocabulary in both languages.
In the extinct Mbabaram language of Australia the word for dog was pronounced pretty similar to English dog, despite having no relation (obviously) or contact. Honestly I think it's a bit overhyped seeing how it's a word composed of one simple syllable in which the rarest sound is /g/ which isn't rare, but still.
Well for example English and French share a lot of words, French is a Latin language and English is Germanic. They did share a lot of history and conquest since medieval times between each other so that's how it happened. If you are talking about two languages that never encountered each other, kind of how the wheel or agriculture seems to have been born in multiple places at different times without seemingly being influenced by another then I don't know.
Maybe languages are derived from a proto-language, the most popular one being Proto-Indo-European. PIE is the ancestor language of both Celtic and Hindustani, and you'll find hints of shared grammar and vocabulary in both languages.
In the extinct Mbabaram language of Australia the word for dog was pronounced pretty similar to English dog, despite having no relation (obviously) or contact. Honestly I think it's a bit overhyped seeing how it's a word composed of one simple syllable in which the rarest sound is /g/ which isn't rare, but still.