捨生取義 is a Chinese proverb that comes from the philosopher Mencius.

It can be translated in a few different ways:
To give up life for righteousness.
To choose honor over life
Better to sacrifice one's life than one's principles.

獻身 is used to describe being so devoted to something that you will make sacrifices for that goal/thing/person.

You can also translate this word as any of the following:

This can be a dedication to or for someone but is often used as a dedication or making sacrifices for your country, public service, or a cause. For instance, an Olympic athlete makes great sacrifices to train in his/her sport for their country and compatriots.

While the form shown to the upper-left is considered an ancient Japanese version, in modern Japan, they use the simplified version of the first Kanji (shown to the right). Click on the Kanji at the right instead of the button above if you want this modern Japanese version.

If you are looking for a more religious meaning of devotion, see Faith.

See Also:  Confidence | Dedication

犧牲 means sacrifice in Chinese, Japanese Kanji, and old Korean Hanja.

There is a suggestion in this word that this regards sacrificing your life.

Note: Depending on the context, this can also mean victim or scapegoat in Japanese.

In original and ancient Chinese, this word referred to sacrificial animals. It can still have this meaning in a Buddhist context.

The version of the first character used in modern Japan looks like the image to the right. If you order this from the Japanese master calligrapher, it will be written in this Japanese version.

捨己 is a Chinese and Japanese word that means selfless, self-sacrifice (to help others), self-renunciation, or altruism.