It's interesting to note that the word "twin" has been around for a long time, even before the modern English language developed. It is believed to have originated from the Proto-Germanic word "twai", meaning "two", which further traces back to the Proto-Indo-European word "dwo" with the same meaning.
So, the word "twins" has a very old and deep-rooted history, reflecting the human fascination with the concept of "two" and its implications for families, nature, and the world around us.