Mother

What is a mother? Is it age? Or is it experience? Is it even relationship? We have our own definitions of mothers, we know different types too. Some are tall, some short, some wide or thin, some light or dark. But the most interesting thing is this- a mother can come from anywhere. How can we be without a mother if a mother can come from anywhere? Family: sisters, aunts, grandmothers and so on are more common but what of the others? Friends Nieces Daughters How can we be surrounded by mothers but not have one?