This is the 2458th most frequent Japanese word.
互いに
Mutually; each other; together.
Here, '互いに' is used to denote reciprocal action, suggesting that both parties should support one another mutually.
私たちは互いに助け合うべきです。
We should support each other.
In this sentence, '互いに' indicates a bidirectional activity between two people or groups where complimenting occurs mutually.
彼らは互いに褒め合いました。
They complimented each other.
'互いに' is used here to convey the concept of shared effort to understand each other, emphasizing the mutual aspect.