(n.) The state of being a mother; the character or office 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 maternity matrilineage matriliny matrisib matrocliny motherliness mothership paternity patrilineage patriliny patrisib patrocliny propinquity relation relationship sibship sisterhood sistership ties of blood