| 天干 | tiān gān | the 10 heavenly stems 甲[jia3], 乙[yi3], 丙[bing3], 丁[ding1], 戊[wu4], 己[ji3], 庚[geng1], 辛[xin1], 壬[ren2], 癸[gui3], used cyclically in the calendar and as ordinal numbers I, II etc |
| 庚 | gēng | age / seventh of the ten Heavenly Stems 十天干[shi2 tian1 gan1] / seventh in order / letter "G" or Roman "VII" in list "A, B, C", or "I, II, III" etc / ancient Chinese compass point: 255° / hepta |
| 十干 | shí gān | same as 天干 / the 10 heavenly stems 甲, 乙, 丙, 丁, 戊, 己, 庚, 辛, 壬, 癸 (used cyclically in the calendar and as ordinal number like Roman I, II, III) |
| 十天干 | shí tiān gān | the ten Heavenly Stems 甲[jia3], 乙[yi3], 丙[bing3], 丁[ding1], 戊[wu4], 己[ji3], 庚[geng1], 辛[xin1], 壬[ren2], 癸[gui3] (used cyclically in the calendar and as ordinal number like Roman I, II, III) |