This is the 8393rd most frequent Japanese word.
性交
Sexual intercourse.
The word "性交" is used here in a scientific and biological context to discuss its role as a component of human biology.
性交は人間の生物学的な活動の一部です。
Sexual intercourse is a part of human biological activities.
"性交" is referenced here in a cultural and thematic context, emphasizing its significance in literary works.
文学の中で性交はしばしば重要なテーマとなっています。
In literature, sexual intercourse often becomes an important theme.
Here, "性交" is mentioned in a conversational and nonetheless formal context, alluding to discussions about interpersonal relationships.