That is so true. It takes a woman to truly understand another woman. And a look can say as much as 100 words. You can fully rely on someone that understands you rather than on someone that you have to explain a million times.

The problem is that 2 girls/women seeming close will automatically be misinterpreted by society.

It's like that in the community where I live. We had a sisterhood at school (or sorority, as it is known in the US) and we live by it after we leave school. It's been like that since before I was born.

Women are conditioned/wired for being social, making/having friends with a tight 'circle' of close friends, etc.

Men aren't. I can do friends at all, and have none. Probably a large part is trust - I find it very difficult to be vulnerable (in relationships or not), and trusting anyone who might be close to me is nearly impossible. I might never get past that.