互相
hùxiāng · HSK 3
each other
🔄 互 = mutual/each-other + 相 = each-other/appearance
Two synonyms stacked: 互 (mutual) + 相 (reciprocal) reinforce each other to mean mutually or one another. 相 also appears in 相信 (believe) and 相同 (same), always carrying the each-other sense here.