Life
independent noun
A vocab made from a single kanji all alone usually keeps at least one of the meanings of its kanji parent. In this case, that's life.
Since this word is made up of a single kanji, it should use the kun'yomi reading. When learning the kanji, you didn't learn that reading, so here's a mnemonic to help you with this word:
The Book of Enoch (いのち) has passed down your fate and told you how to use your life. You must read the book of Enoch and find out what you're supposed to do.
虫の命だって、大切な命なんだよ。
Even a bug's life is an important life.
このフィギュアは命の次に大切なんです。
This figure is the second most important thing, after my life.
神様、お願いです。私の命と引き換えに、この子の命を救ってください。
God, please. Save this child's life in exchange for my life.