She is my kin.
She is my sib.
Can the words kin and sib mean exactly the same in these sentences?
Actually it's not sib that is derived from sibling. It's the other way around. I know sib can mean sibling simply (at least that's what the dictionary says). And I'm not asking about this meaning.
My question is if these two words can mean exactly the same thing in this sentence. You didn't answer this question if understand what you meant. You just said they can mean different things. Is that right?
They mean differnt things. A person who is your kin is related in some way, not necessarily closely. A sib is your brother or sister.
So the first meaning from here is outdated, right?
It is not a definition that feels right.
http://www.askoxford.com/concise_oed/kin?view=uk