EspionageThe practice of spying or using spies
Definitions:
The act or practice of spying
ResistanceThe refusal to accept or comply with something
Definitions:
The act or power of resisting, opposing, or withstanding
UndercoverInvolved in a secret operation
Definitions:
Working or done out of public sight; secret
SabotageDeliberate and malicious acts that result in disruptions
Definitions:
An act of hindering someone's plans or efforts
AgentA person who acts on behalf of another individual or group
Definitions:
A person who provides a particular service, typically one involving organizing transactions between two other parties