Kinship = new favourite word. Tis synonymous with 'affinity' which is itself a synonym for 'force' and for 'chemical attraction' (according to my trusty thesaurus). Also, I had oodles of thesaurus fun looking up 'force'. Try it :)
"The meeting of two personalities is like the contact of two chemical
substances: if there is any reaction, both are transformed." - Carl
Jung. Think he was nearly there with that one.
are how people become tribekin - prolonged exposure breeds affinity.
Strong and persistant chemical reaction = omnipresent chemicals in blood
= those not previously related by blood have a different
chemical make up due to a person being present in their lives. If this
isn't kin, I'm not sure what is. Gives a whole new meaning to friends
being the family you choose imho.