Safety
Safe
noun, な adjective
When you are all relaxed you are finally safe and in safety.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
このツリーハウスは、安全ですか？
Is this tree house safe?
大人でも、ハイキングは安全に行うことが大切です。
It's important to hike safely even for adults.
全日本の安全はあなたにかかってます。
The safety of all of Japan depends on you.