The name Loving Kindness in Chinese / Japanese...

慈 is the simplest way to express the idea of compassion.

This can also mean love for your fellow humans, humanity, or living creatures. Sometimes this is extended to mean charity.

This term is often used in a Buddhist or Christian context. The concept was also spoken of by Laozi (Lao Tzu) in the Dao De Jing (Tao Te Ching).

慈 is considered the direct translation of the Sanskrit word मैत्री (maitrī) Pali word मेत्ता (mettā). In this context, it means benevolence, loving kindness, and goodwill.

This Chinese character is understood in Japanese but is usually used in compound words (not seen alone). Also used in old Korean Hanja, so it's very universal.

See Also:  Mercy | Benevolence | Forgiveness | Kindness

愛心 literally means “loving heart.” It can also be translated as “compassion.”

In Chinese, it carries more of a compassionate meaning.

愛心 is rarely used in Japanese anymore, so best if your audience is Chinese.

See Also:  Compassion | Love

戀心 literally means “loving heart.” It can also be translated as “one's love” or “awakening of love.”

戀心 is used exclusively for love between boyfriends and girlfriends or husband and wife.

Breaking down the meaning of each Kanji, the first means love, affection, or tender passion. The second Kanji means heart, mind, or soul (most will read it as the heart).

See Also:  Compassion | Love

慈悲征服一切 is a way to express the idea that mercy, compassion, and loving-kindness can overcome all things.

This phrase is composed of 3 Chinese words:
慈悲 = loving-kindness; mercy; compassion; benevolence. It's used in Buddhism a lot to express the idea of how one should treat everyone else and all living beings.
征服 = to conquer; to subdue; to vanquish; to overcome.
一切 = all; everything; the whole; lock, stock, and barrel; without exception.

Besides the title above, 慈悲 can also be defined as clemency or lenience and sometimes the act of giving charity.

In the Buddhist context, it can be defined as “benevolence,” “loving-kindness and compassion,” or “mercy and compassion.”

This Buddhist virtue is perhaps the most important to employ in your life. All sentient beings that you encounter should be given your loving kindness. And trust me, however much you can give, it comes back. Make your life and the world a better place!

This Chinese/Japanese Buddhist term is the equivalent of Metta Karuna from Pali or Maitri Karuna from Sanskrit.

慈 can mean loving-kindness by itself.
悲 adds a component of sorrow, empathy, compassion, and sympathy for others.

See Also:  Benevolence