熱
| Level 4 vocabulary | ||
| 熱い | (adj) hot (thing)/ (P) | |
| Level 3 vocabulary | ||
| 熱 | (n,n-suf) fever/ temperature/ (P) | |
| 熱心 | (adj-na,n) zeal/ enthusiasm/ (P) | |
| Level 2 vocabulary | ||
| 加熱 | (n,vs) heating | |
| 熱する | (vs-s) to heat/ (P) | |
| 熱帯 | (n) tropics/ (P) | |
| 熱中 | (n) nuts!/ enthusiasm/ zeal/ mania/ (P) | |
| Level 1 vocabulary | ||
| 光熱費 | (n) cost of fuel and light/ (P) | |
| 情熱 | (adj-na,n) passion/ enthusiasm/ zeal/ (P) | |
| 熱意 | (n) zeal/ enthusiasm/ (P) | |
| 熱湯 | (n) boiling water/ (P) | |
| 熱量 | (n) temperature | |