>>>I'm still at a Loss with the capitalization Rules in English - you can see I still capitalize Wrong words. IOW, I have no clue.
>>
>>Whaddaya mean, "no clue"? - I've just GIVEN you one re: "sets" of proper nouns.
>
>Wrote that one before I read the one with the clue.
>From your tagline... "Nature" is part of which set?

Ah, Nature is someone's name - Mother Nature :-) Seriously though, you can say "Killing is not in my nature", which is different from Mother N. Here we see cap'ing applied to someone's/something's title - another case for using it.

>
>In my language, it's very simple - one capitalizes only the given names of people, places and institutions. Places are to be understood in broad geographical sense, to include galaxies, stars, planets, moons etc. And that's names only - adjectives derived from them are not capitalized. And there's no proper case in captions, either. Caption is a sentence without the final period.

Proper'ing captions is falling out of fashion in many fields. In the UK Channel 5 TV never has a capital in ANY caption, title.