古代【こだい】
ancient times, distant past, antiquity
古典【こてん】
classic (work, esp. book), the classics
古墳【こふん】
ancient burial mound, barrow, tumulus
考古学【こうこがく】
archaeology, archeology
中古【ちゅうこ】
used, second-hand, old, Middle Ages (in Japan esp. Heian period)
古い【ふるい】
old, aged, ancient, antiquated, antique, timeworn, long, since long ago, time-honored, of the distant past, long-ago, stale, threadbare, hackneyed, corny, old-fashioned, outmoded, out-of-date
古本【ふるほん】
secondhand book, ancient book, antiquarian books
古巣【ふるす】
old haunts, former homes
履き古し【はきふるし】
worn-out shoes, worn-out socks
古風【こふう】
old-fashioned, archaic, antique, antiquated
太古【たいこ】
ancient times
稽古【けいこ】
practice, practising, training, study
古城【こじょう】
old castle, old fortress
古語【こご】
archaic word, obsolete word, archaism, old saying, old adage, old language, ancient language
古臭い【ふるくさい】
stale, old fashioned, hackneyed, trite, antiquated, obsolete, musty, outdated
古文【こぶん】
ancient writing (Edo-period or older), classical literature, ancient Chinese character (pre-Qin period), Chinese character script used before the Qin period