赤， 紅， 朱， 緋， あか
1. red, crimson, scarlet
2. red-containing colour (e.g. brown, pink, orange)
3. Red (i.e. communist)
4. red light (traffic)
5. red ink (i.e. in finance or proof-reading), (in) the red
6. complete, total, perfect, obvious
7. copper
8. red 5-point card...
tbd