Opaque (adjective) غیر شفاف، دھندلا، مبہم

not able to be seen through; not transparent.
Example: “bottles filled with a pale opaque liquid”
Captive (noun) جنگی قیدی، حوالاتی

a person who has been taken prisoner or an animal that has been confined.
Example: “the captives were freed after the kidnappers told them a ransom had been paid”