I have just written an essay about the word water in the sibling post comments.
One thing I discovered in the process is that the word water comes to english all the way from Proto Indo European. The word hydro, however, comes from ancient greek, which comes from the same PIE word for water.
One thing I discovered in the process is that the word water comes to english all the way from Proto Indo European. The word hydro, however, comes from ancient greek, which comes from the same PIE word for water.