Army vs. Marines

Armynoun

A large, highly organized military force, concerned mainly with ground (rather than air or naval) operations.

Armynoun

Used absolutely for that entire branch of the armed forces.

Armynoun

(often capitalized) Within a vast military, a very large tactical contingent (e.g. a number of divisions).

Armynoun

The governmental agency in charge of a state's army.

Armynoun

(figuratively) A large group of people working toward the same purpose.

Armynoun

(figuratively) A large group of social animals working toward the same purpose.

Armynoun

(figuratively) Any multitude.

Armynoun

A collection or body of men armed for war, esp. one organized in companies, battalions, regiments, brigades, and divisions, under proper officers.

Armynoun

A body of persons organized for the advancement of a cause; as, the Blue Ribbon Army.

Armynoun

A great number; a vast multitude; a host.

Armynoun

a permanent organization of the military land forces of a nation or state

Armynoun

a large number of people united for some specific purpose

Army

An army (from Latin arma via Old French armée, [feminine]), ground force or land force is a fighting force that fights primarily on land. In the broadest sense, it is the land-based military branch, service branch or armed service of a nation or state.

Marines

Marines, or naval infantry, are typically a military force trained to operate in littoral zones in support of naval operations. Historically, tasks undertaken by marines have included helping maintain discipline and order aboard the ship (reflecting the pressed nature of the ships' company and the risk of mutiny), the boarding of vessels during combat or capture of prize ships, and providing manpower for raiding ashore in support of the naval objectives.