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entity go
that which is perceived or known or inferred to have its own distinct existence (living or nonliving)

abstraction, abstract entity go
a general concept formed by extracting common features from specific examples

psychological feature go
a feature of the mental life of a living organism

event go
something that happens at a given place and time

group action go
action taken by a group of people

action, military action go
a military engagement

defense, defence, defensive measure
(military) military action or resources protecting a country against potential enemies

noun.act

9 Subcategories

umbrella go
a formation of military planes maintained over ground operations or targets
air defense go
defensive measures designed to destroy attacking enemy aircraft or missiles or to nullify their effectiveness
stand go
a defensive effort
hasty defense, hasty defence go
a defense organized while in contact with the enemy or when time is limited
deliberate defense, deliberate defence go
a defense organized before contact is made with the enemy and while time for organization is available
biological defense, biological defence, biodefense, biodefence go
procedures involved in taking defensive measures against attacks using biological agents
chemical defense, chemical defence go
procedures involved in taking defensive measures against attacks using chemical agents
mining, minelaying go
laying explosive mines in concealed places to destroy enemy personnel and equipment
biological warfare defense, biological warfare defence, BW defense, BW defence go
defense against biological warfare