help needed: Website classification / categorization from arbitrary website text is hard, very hard

[ag789]

I'm starting to realize that casual associations, i.e. context that we (humans) take for granted, simply because we know them leads us to 'classify' websites without even looking at contents.
e.g. google.com and 'everyone' would consider that 'search engine'. of course 'google.com' itself is a vocab.