Dear. Memeber!
성기.com means sexorgan.com or penis.com
성행위.com means sex.com
Would you give me appraisal?
Thanks
Seems that most Korean 'single' words are one or two symbols.
Google.com/translate gives 성행위 is "Sexual Intercourse"
Google translate shows "sex" in Korean as:
noun
섹스 sex
성 sex, gender, last name, surname, nature
성별 gender, sex, sexuality, sex distinction
여성 female, woman, femininity, sex, womankind, fair
남성 male, sex, masculine gender, male voice, mankind
adjective
성적인 sexual, sex, sexy
성의 sex, sexual, homogeneous, departmental
남녀의 sexual, sex
암수의 sex, sexual
for penis, google.com/translate shows:
음경 penis, cock, dick
페니스 penis
google shows 성기 as "genitalia"