védelem

• air-raid precautions, civil defence

• selective system

• solid defence

• defensively

• self-defence, self-defense

• apologetics

• national defence, national defense

• ack-ack, air defence, anti-aircraft defense

• fire service

• linear defense

• flood-control, flood-prevention, protection against flood, protection against inundation

• in self-defence, in self-defense

• pest control

• safeguarding

• conservation