How do you say pain in Chinese?
— 疼痛 (téngtòng), 苦痛 (kǔtòng), 疼 (téng), 痛 (tòng)

Specialized synonyms for pain in Chinese
burncmn
thorn刺 (cì), 荊棘, 荆棘 (jīngjí)
Antonyms for pain in Chinese
pleasure欢乐