Guerrilla and Vilifier

Guerrilla noun - A member of an irregular armed force that fights a stronger force by sabotage and harassment.

Vilifier and guerrilla are semantically related In some cases you can use "Vilifier" instead a noun "Guerrilla".

Vilifier noun - One who attacks the reputation of another by slander or libel.

Guerrilla and vilifier are semantically related in someone hated or competed against topic. Sometimes you can use "Guerrilla" instead a noun "Vilifier".