I love the etymology of the word "world" it's a combination of:
weraz = “man” and aldiz = “age, lifetime”.
Literally meaning “era/age of man”
I really love etymology, because I like to imagine words having "lives", and then tracking those lives over the centuries. It's fascinating to think that a word might have begun in China thousands of years ago, migrated to India, then the Islamic World, then Europe, and are now everyday things in English.
And then Hello became Allo in French and Alo in Spanish, which is only used as a greeting over the phone and never as a general greeting.
many times, even etymology does not make things intuitive: e.g. 'spendthrift'. similarly, many English words are close, but their meaning diverge a lot. e.g. condemn vs condone, or vindicate vs vindictive.
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A good book on this is Proto by Laura Spinney, it covers all the branches of Proto-Indo-European and also postulates that the entire family may have started from as few as a hundred speakers who were steppe nomads, which is mindboggling if true.