Compounds of 古

• 古
  (n) antiquity
  ancient times
  (P)
• 古
  (n) (1) used item
  secondhand item
  (n-pref) (2) old
  used
  previous
• お古
  (n) used article (esp. clothes)
• 往古
  (n) ancient times
• 懐古
  (n,adj-no) recalling the old days
  nostalgia
  reminiscences
• 擬古
  (n,vs) imitation of classical styles
• 近古
  (n) early modern age
• 稽古
  (n,vs) practice
  practise
  training
  study
  (P)
• 古い
  (adj-i) old (not person)
  aged
  ancient
  antiquated
  stale
  threadbare
  outmoded
  obsolete article
  (P)
• 古え
  (n) antiquity
  ancient times
• 古く
  (adv,n) anciently
  formerly
• 古す
  (v5s,vt) to wear out
• 古ロ
  (n) (abbr) ancient Rome
• 古意
  (n) ancient ways
  the feelings of the ancients
• 古音
  (n) old (pre-Wu dynasty) character pronunciation
• 古家
  (n) old house
  deserted house
• 古歌
  (n) old song
  old poem
• 古歌
  (n) old song
  old poem
• 古河
  (n) old river
• 古画
  (n) ancient painting
• 古雅
  (adj-na,n) classical elegance
  antiquity
• 古格
  (n) convention
  usage
  old customs
  old etiquette
• 古学
  (n) classical studies
• 古楽
  (n) ancient (early) music
• 古株
  (n) old-timer
  veteran
  senior
• 古顔
  (n) familiar face
  old timer
• 古器
  (n) an antique
• 古希
  (n) seventieth birthday
  70th birthday
• 古稀
  (n) seventieth birthday
  70th birthday
• 古記
  (n) ancient records