お七夜[oshichiya] name-giving ceremony
七つ[nanatsu] seven
七つの海[nanatsunoumi] the seven seas
七屋[nanatsuya] pawnshop
七回忌[shichikaiki] seventh anniversary of a death

七角形[shichikakkei] heptagon
七曲がり[nanamagari] tortuous or spiral (path)
七月[shichigatsu] July
七賢[shichiken] the Seven Wise Men (of Confucius's Analects)

クローン技術[kuroongijutsu] cloning technology
医学技術士[igakugijutsushi] medical technician
演技[engi] acting
科学技術[kagakugijutsu] science and technology
科学技術庁[kagakugijutsuchou] Science and Technology Agency

科学技術庁長官[kagakugijutsuchouchoukan] Director General of Science and Technology Agency
関節技[kansetsuwaza] locking technique in judo
技巧[gikou] technique
技師[gishi] engineer

亜種[ashu] subspecies
異機種[ikishu] heterogenous equipment
異種[ishu] different kind (species, variety)
育種[ikushu] (plant) breeding
育種家[ikushuka] (plant) breeder

育種所[ikushujo] (plant) nursery
一種[isshu] species
一粒種[hitotsubudane] an only child
種違い[tanechigai] half-brother
艶種[tsuyadane] love affair

競べ[kurabe] contest
駅伝競走[ekidenkyousou] long-distance relay race
価格競争[kakakukyousou] price competition
競う[kisou] to compete with
競る[seru] to compete

競泳[kyouei] swimming race
競演[kyouen] recital contest
競技[kyougi] game
競技者[kyougisha] competitor
競合[kyougou] contention