invader

As nouns the difference between viking and invader

is that viking is viking (one of the scandinavian seafaring warriors) while invader is one who invades; an assailant; an encroacher; an intruder.

As a noun invader

is one who invades; an assailant; an encroacher; an intruder.

As an adjective undefined is

lacking a definition or value.

As nouns the difference between occupant and invader

is that occupant is a person who occupies a place or a position while invader is one who invades; an assailant; an encroacher; an intruder.

As nouns the difference between invader and occupier

is that invader is one who invades; an assailant; an encroacher; an intruder while occupier is one who occupies, particularly with respect to a foreign government controlling the territory of another.

As nouns the difference between invader and destroyer

is that invader is one who invades; an assailant; an encroacher; an intruder while destroyer is that which destroys something.

As nouns the difference between aggressor and invader

is that aggressor is the person or country that first attacks or makes an aggression; that begins hostility or a quarrel; an assailant while invader is one who invades; an assailant; an encroacher; an intruder.

As nouns the difference between interloper and invader

is that interloper is (obsolete) an unlicensed or illegitimate trader while invader is one who invades; an assailant; an encroacher; an intruder.

As a verb invades

is third-person singular of invade.

As a noun invader is

one who invades; an assailant; an encroacher; an intruder.

As a noun invader

is one who invades; an assailant; an encroacher; an intruder.

As a verb invaded is

(invade).