| term | pronunciation | English |
|---|
| 防ぐ | ふせぐ | to defend (against), to protect, to prevent |
| 防止 | ぼうし | prevention, check |
| 防犯 | ぼうはん | prevention of crime |
| 予防 | よぼう | prevention, precaution, protection against |
| 予防接種 | よぼうせっしゅ | immunization, immunisation, vaccination, inoculation |
| 国立予防衛生研究所 | こくりつよぼうえいせいけんきゅうしょ | National Institute of Health |
| 国防 | こくぼう | national defence, national defense |
| 堤防 | ていぼう | bank, weir |
| 攻防 | こうぼう | offense and defense, offence and defence |
| 消防 | しょうぼう | fire fighting, fire department |
| 砂防 | さぼう | erosion control |
| 防御 | ぼうぎょ | defense, defence, safeguard, protection |
| 防水扉 | ぼうすいひ | watertight door |
| 防波堤 | ぼうはてい | breakwater, mole |
| 防潮堤 | ぼうちょうてい | tide embankment, seawall |
| 防火扉 | ぼうかとびら | fire door |
| 防災 | ぼうさい | disaster prevention |
| 防腐 | ぼうふ | preservation, embalmment |
| 防衛 | ぼうえい | defense, defence, protection, self-defense, self-defence |
| 防衛施設庁 | ぼうえいしせつちょう | (Japanese) Defense Facilities Administration Agency (Defence) |
| 防護 | ぼうご | protection |