The qualities or instinct of being a mother; maternal feelings and behavior such as caring for and nurturing a child.
出産後、彼女の中に強い母性が芽生えた。
After giving birth, a strong sense of motherhood sprang up in her.
母性本能と言われるものは、人によって強さが違う。
What is called maternal instinct varies in intensity from person to person.
彼女は子どもに対して包容的で母性にあふれている。
She is very nurturing toward children and full of maternal warmth.