I think that even when you have a firm belief about what kin are and what makes kin kin, it is incredibly difficult to put into words.
For me it is not something I've ever tried to define. Knowing that is what I am I just accepted and never analized it too closely.
It wasn't until I read your question Katie that I thought about what words I might use to describe it.
Any thing I thought of really didn't come close to explaining or describing what kin is or what it means to me.
I cannot relate properly to you as I do not have the words, (an incredibly difficult thing for a teacher to admit to. lol) I can just say inside, deeply embedded in my essence is a thing that will not be denied.
It screams kin and it refuses to be quiet.

I have never had to explain it to myself or convince myself or my family that to believe it does not mean that I am insane.
I have no idea if this even makes any sense to anyone but me.

Finally I will say I think it is about both essence and awareness.
Kin-ness is in your essence and the more awareness you have of that kin-ness the more like your true self you become.
Love the alien theory Dea. And really beings from on high we certainly are, so who is to say one human word is right and another human word is wrong. A word is just a word and a name is just a name. They can call us whatever they want, it is what we call ourselves that matters.
I am kin. And kin.....Well that is what I am.

Lady C.