Relating to biological sex — pertaining to sex differences or traits (e.g., male/female characteristics) in a biological sense.
多くの動物は性的二形を示す。
Many animals exhibit sexual dimorphism.
性的特徴は成長とともに明らかになることが多い。
Sexual characteristics often become apparent with growth.
性的発達にはホルモンが重要な役割を果たす。
Hormones play an important role in sexual development.
Relating to sexual relations, attraction, abuse, etc. — matters or actions involving sexual behavior or sexuality.
彼らは長年にわたって性的関係にあった。
They had a sexual relationship for many years.
性的魅力を感じるかどうかは人それぞれだ。
Whether someone feels sexual attraction is different for each person.
性的虐待は深刻な犯罪であり、厳しく処罰されるべきだ。
Sexual abuse is a serious crime and should be punished severely.
学校では性的教育を適切に行う必要がある。
It is necessary to provide appropriate sex education in schools.