a feeling of being calm and free from worry
落ち着いて心配のない気持ち (ochitsuite shinpai no nai kimochi)
"Insurance gives you peace of mind in uncertain times."
"保険は不確実な時にあなたに安心感を与えます。" (hoken wa fukakujitsuna toki ni anata ni anshinkan o ataemasu)
Involving serious risk or significant consequences.
to start something, especially a project or task
a secret enemy
to donate or to reveal something unintentionally
to write something so you remember it
information spreads quickly