Hum.... I think this one is kind of french word. If you mean the same as what I mean, you can call this word in Korean
"천사같은" <- Adjective , "천사같다" <- Verb . I don't know what you mean exactly therefore please understand me~:(
Besides, I'm not good at French.
천사같은 = chon sa ga tun ,천사같다 = chon sa ga ta.