This is the 5289th most frequent Japanese word.
birth
The Japanese word for "birth" is 誕生 (tanjou), meaning the act or process of being born.
Here, '誕生' (birth) is used to represent the commencement of existence, particularly of new life. It's employed in a figurative and celebratory context.
彼女は新しい命の誕生を祝いました。
She celebrated the birth of a new life.
In this sentence, '誕生日' (birthday) specifically refers to the annual anniversary of one's birth, a common and cultural usage.
私の誕生日は来月です。
My birthday is next month.
Here, the term '誕生' (birth) metaphorically denotes the creation or emergence of an idea or innovation, applied in a conceptual context.