善良 is a word that means good and honest, kind-hearted, goodness, excellence, and/or virtue.

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

鉄心石腸 is a Japanese proverb that suggests you should have the inner-strength and will as hard and steadfast as iron.

It's the Japanese way of saying, “stay strong.” This is an especially uplifting thing to say to a person in distress or recovering from a disaster. It's kind of the survivor's creed.

If you literally translate this, it means “iron will, stone guts” or “iron heart, rock-hard bowels.”

仁慈 word is used in Chinese, Korean, Japanese, and Asian Buddhism to relay the important idea of loving kindness.

仁慈 can also be defined as: benevolent; charitable; kind; merciful; kind-hearted; benevolence; kindness; humanity; mercy.

In Japanese, this can also be the given name Hitoji. This would also be a good Mandarin Chinese given name romanized as Jentzu (in Taiwan) or Renci (which sounds like ren-tsuh).

See Also:  Love | Altruism | Kindness | Charity