For "captured":
* Seized: This implies a forceful taking.
* Taken: This is a more general term.
* Apprehended: This often refers to the capture of a criminal.
* Held: This suggests a state of confinement.
* Ensnared: This suggests a sense of being caught in a trap.
* Imprisoned: This specifically refers to being confined in a prison.
* Confined: This emphasizes the lack of freedom.
* Secured: This suggests a state of being safe and protected.
* Subdued: This implies overcoming resistance.
For "trapped":
* Entangled: This suggests being caught in something difficult to escape.
* Enclosed: This emphasizes being surrounded and unable to leave.
* Hemmed in: This suggests being restricted by physical barriers.
* Cornered: This suggests being forced into a position with limited escape options.
* Stuck: This is a more general term, emphasizing the inability to move freely.
* Imprisoned: This specifically refers to being confined in a prison.
* Bound: This suggests being restricted by something physical, like chains.
* Constrained: This emphasizes the feeling of being limited.
The best synonym will depend on the specific situation and the nuance you want to convey.