Noun A + 和/与 + Noun B + 间
The word 间 (jiān) means "between" or "among" and is placed after two or more nouns to indicate the space or relationship connecting them. It is a versatile word used in both physical and abstract contexts to express the idea of being in the middle of things.
朋友间应该坦诚相待,互相信任。
péng yǒu jiān yīng gāi tǎn chéng xiāng dài, hù xiāng xìn rèn.
Friends should be honest with each other and trust one another.
两国间的贸易合作越来越紧密了。
liǎng guó jiān de mào yì hé zuò yuè lái yuè jǐn mì le.
Trade cooperation between the two countries is becoming increasingly close.
同事间偶尔有些小矛盾是很正常的。
tóng shì jiān ǒu ěr yǒu xiē xiǎo máo dùn shì hěn zhèng cháng de.
It's perfectly normal for colleagues to have occasional minor conflicts.