How do you say friend in Chinese?
— 朋友 (péngyǒu), 友人 (yǒurén)

Generic synonyms for friend in Chinese
person人 (rén)
someone有人 (yǒu rén), 某人 (mǒurén), 誰, 谁 (shéi, shuí)
soul靈魂, 灵魂 (línghún), 魂魄 (húnpò)
Specialized synonyms for friend in Chinese
brother哥哥 (gēge), 弟弟 (dìdi), 兄弟 (xiōngdi)
comrade同志 (tóngzhì)
light輕, 轻 (qīng)
Derivative terms for friend in Chinese
friendship友誼, 友谊 (yǒuyì), 友情 (yǒuqíng)