(n.) The state of being a mother; the character or relation of a mother.

affiliation agnation alliance ancestry blood blood relationship brotherhood brothership cognation common ancestry common descent connection consanguinity cousinhood cousinship enation fatherhood filiation fraternity kindred kinship maternalness matrilineage matriliny matrisib matrocliny motherhood motherliness mothership parenthood paternity patrilineage patriliny patrisib patrocliny pregnancy propinquity relation relationship sibship sisterhood sistership ties of blood