noun, noun or participle which takes 'suru', intransitive verb
Feeling for someone's misfortune or hardship. Can be neutral sympathy, warm compassion, or slightly condescending pity depending on context. Often used with する to mean 'to sympathize' or 'to feel sorry for'.
彼の話を聞いて、深く同情した。
Hearing his story, I felt deep sympathy.
同情するなら金をくれ。
If you feel sorry for me, give me money.