/ˈmɜːsɪnəriˈ/ – Noun
Definition: 1. lính đánh thuê;
2. kẻ giết người thuê;
3. vụ lợi, tư lợi.
A more thorough explanation: A mercenary is a person who is hired to engage in military combat or other hazardous activities in exchange for payment, typically motivated by personal gain rather than ideological or nationalistic reasons.
Example: The mercenary soldier was hired by the private military company to provide security services in the conflict zone.