There are some 2 character Japanese words that work in either order and are still words, even when you reverse the order of the two characters. For most 2 character words this wouldn’t work, but here is a list of some of them!
1)
本日 (this day; ほんじつ; honjitsu)
日本 (Japan; にほん; nihon)
2)
会社 (company, corporation; かいしゃ; kaisha)
社会 (society; しゃかい; shakai)
3)
王女 (princess; おうじょ; oujo)
女王 (queen; じょおう; joou)
4)
外国 (foreign country; がいこく; gaikoku)
国外 (outside of the country; こくがい; kokugai)
5)
温室 (greenhouse; おんしつ; onshitsu)
室温 (room temperature; しつおん; shitsuon)
6)
牛乳 (milk; ぎゅうにゅう; gyuunyuu)
乳牛 (milk cow; 乳牛; にゅうぎゅう)
7)
海外 (foreign, overseas; かいがい; kaigai)
外界 (outside world; がいかい; gaikai)
8)
苦労 (trouble, hardship; くろう; kurou)
労苦 (labor; ろうく; rouku)
9)
相手 (partner, opponent in sports; あいて; aite)
手相 (palm reading; てそう; tesou)
10)
現実 (reality; げんじつ; genjitsu)
実現 (implementation, realization; じつげん; jitsugen)
11)
別離 (parting, separation; べつり; betsuri)
離別 (separation, divorce; りべつ; ribetsu)
12)
家出 (running away from home; いえで; iede)
出家 (entering priesthood; しゅっけ; shukke)
13)
外部 (outside, exterior; がいぶ; gaibu)
部外 (outside the department; がいぶ; bugai)
14)
性向 (tendency, nature; せいこう; seikou)
向性 (tropism; こうせい; kousei)