What I'm looking for is something like google trends. It has to have tags like the ones used on SE,
john lennon for instance, lennon is in celebreties category and ISIS is in terrorism category and so on. Think of it, like a dictionary containing html meta tags
It has to be 1 keyword per tag, descriptions are okay but i don't need them. So I don't care if they exist or not. Not too many keywords, not too little, enough to cover the most important topics, just like tags on this site. The keywords has to be important, for example the word table isn't important, kitchen is. Kinda the same way a website is split.
I want to download them, csv file or similar. It has to be free and frequently updated. (If the price is reasonable, I'm willing to pay).
The categories should stay the same forever. I mean I don't want to have a file that contains today in
Physics category for example
and then tomorrow they decide to split it up and create a
quantum physics category and put string theory in that category. The categories stay the same, keywords get updated, never deleted, never moved from one category to another.
I prefer to have it locally, just in case the api I'm using stopped working, so I'd like to download it. No frequent update is needed. It doesn't have to be one file, 100 files, it's okay.
I'm doing some statistics about keywords used on the web, not just today, since it started.
I considered crawling twitter hashtags, or facebook hashtags or google trends, but the thing is people use many useless keywords and hashtags nowadays like
#I_love_bieber and they don't search for keywords, the majority search
What gift to buy for my girlfriend
These useless search and hashtags will give me headache if I'm the guy sorting the keywords. I'd rather use a third party.
If it's available in many languages, and many countries, it's even better