1）food safety，“食品安全”。safety是指the state of being safe from harm or danger，即某物本身的安全性。
2）Food security，即“食品持續供應的保障”，“Food security is a condition related to the ongoing availability of food”。
二、例句
1）A recent survey has found food safety has become the public's No 1 concern. 最近研究發現人們非常重視食物的安全。
2）The reforms made at the national level have strengthened the government's capabilities on food security.
逐步建立起了食品安全檢驗檢測體系，加強了對流通領域食品安全監管，開展了食品安全專項整治，開通了食品安全信息網絡服務平臺，初步實現了食品從“源頭”到“終端”各環節的安全監管。