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long ago, time-honored, of the distant past, long-ago, stale, threadbare, hackneyed, corny, old-fashioned, outmoded, out-of-date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)
最古【さいこ】
the oldest, the earliest
古書【こしょ】
old book, rare book, classic, secondhand book, used book
中古車【ちゅうこしゃ】
used car, secondhand car
古都【こと】
ancient city, former capital
古紙【こし】
used paper, paper for recycling
古今【ここん】
ancient and modern times, all ages, past and present
古本【ふるほん】
secondhand book, ancient book, antiquarian books
古文書【こもんじょ】
historical document, archives, old manuscript, paleograph, pre-Meiji era document addressed to someone in particular
古着【ふるぎ】
old clothes, secondhand clothing
古参【こさん】
seniority, long service
古巣【ふるす】
old haunts, former homes
古典的【こてんてき】
classical, classic
古来【こらい】
from time immemorial, ancient, time-honoured, time-honored
履き古し【はきふるし】
worn-out shoes, worn-out socks
古豪【こごう】
veteran, old-timer, experienced person
