義妹[gimai] sister-in-law (younger)
兄妹げんか[kyoudaigenka] quarrel between siblings
吾妹子[wagimoko] my wife
吾妹[wagimo] my wife
姉妹会社[shimaigaisha] affiliated companies

姉妹都市[shimaitoshi] sister cities
従姉妹[itoko] cousin (female)
従妹[juumai] cousin (younger female)
弟妹[teimai] younger brother and sister
乳姉妹[chikyoudai] foster brother or sister

真婿[manko] vagina
花婿[hanamuko] bridegroom
乞婿[koimuko] bridegroom who is loved by his bride
婿選び[mukoerabi] search for a husband for one's daughter
婿養子[mukoyoushi] son-in-law taken (adopted) into family

娘婿[musumemuko] adopted son-in-law
令婿[reisei] your son-in-law
入婿[irimuko] man who takes his wife's family name and marries into her family
婿入り[mukoiri] being adopted into the family of one's bride