This is the 671st most frequent Chinese word.
母亲
"Mother."
Here, '母亲' is used as a formal and respectful way to refer to one's mother.
我的母亲是一位很慈祥的人。
My mother is a very kind person.
'母亲's role transcribes to a more general and symbolic representation of maternal love.
母亲的爱是世界上最无私的爱。
A mother's love is the most selfless love in the world.
In this sentence, '母亲' is used within a culturally specific context, namely Mother's Day, to denote one's mother explicitly.