古
| Level 4 vocabulary | ||
| 古い | (adj) old (not person)/ aged/ ancient/ antiquated/ stale/ threadbare/ outmoded/ obsolete article/ (P) | |
| Level 2 vocabulary | ||
| 稽古 | (n) practice/ training/ study/ (P) | |
| 古典 | (n) old book/ classics/ classic/ (P) | |
| 中古 | (n-t) (1) used/ second-hand/ old/ (2) Middle Ages/ (P) | |
| 古〜 | (n) used/ secondhand | |
| Level 1 vocabulary | ||
| 考古学 | (adj-no,n) archaeology | |
| 古代 | (adj-na,n-adv,n-t) ancient times/ (P) | |