御付き[otsuki] retainer
御墨付き[osumitsuki] handwriting
恰好付ける[kakkoutsukeru] to affect a stylish air
食っ付く[kuttsuku] to adhere to
食っ付ける[kuttsukeru] to attach

しがみ付く[shigamitsuku] to cling
何方付かず[docchitsukazu] gray area
に付いて[nitsuite] concerning
に付き[nitsuki] because of
打っ付ける[uchitsukeru] to knock

五寸釘[gosunkugi] long nail
間釘[aikugi] double-pointed nail
出る釘は打たれる[derukugihautareru] the nail which sticks out gets hammered down (used to encourage conformity)
切り釘[kirikugi] brad
裏釘[urakugi] nail sticking through

装釘[soutei] binding (book)
釘抜き[kuginuki] pincers
金釘流[kanakugiryuu] a scrawl
ねじ釘[nejikugi] screw