defense

As a verb fortify

is to increase the defenses of; to strengthen and secure by military works; to render defensible against an attack by hostile forces.

As a noun defense is

defence (action of defending or protecting from attack, danger or injury, or any means for that purpose).

As nouns the difference between defense and safety

is that defense is the action of defending or protecting from attack, danger, or injury while safety is the condition or feeling of being safe; security; certainty.

Defense is a related term of assurance.

As nouns the difference between defense and assurance

is that defense is defence (action of defending or protecting from attack, danger or injury, or any means for that purpose) while assurance is the act of assuring; a declaration tending to inspire full confidence; that which is designed to give confidence.

As a verb defending

is present participle of defend.

As a noun defense is

the action of defending or protecting from attack, danger, or injury.

Defense is a related term of security.

As nouns the difference between defense and security

is that defense is defence (action of defending or protecting from attack, danger or injury, or any means for that purpose) while security is (uncountable) the condition of not being threatened, especially physically, psychologically, emotionally, or financially.

Preservation is a related term of defense.

As nouns the difference between preservation and defense

is that preservation is preservation while defense is defence (action of defending or protecting from attack, danger or injury, or any means for that purpose).

Sanctuary is a related term of defense.

As nouns the difference between sanctuary and defense

is that sanctuary is a place of safety, refuge or protection while defense is defence (action of defending or protecting from attack, danger or injury, or any means for that purpose).

As nouns the difference between defense and education

is that defense is defence (action of defending or protecting from attack, danger or injury, or any means for that purpose) while education is education.

Defense is a related term of guard.

As nouns the difference between defense and guard

is that defense is defence (action of defending or protecting from attack, danger or injury, or any means for that purpose) while guard is a person who, or thing that, protects or watches over something.

As a verb guard is

to protect from danger; to secure against surprise, attack, or injury; to keep in safety; to defend.

Defense is a related term of surety.

As nouns the difference between defense and surety

is that defense is defence (action of defending or protecting from attack, danger or injury, or any means for that purpose) while surety is certainty.