仙 means immortal (as in a being or person).

In some contexts, it can mean hermit, ascetic, man of the hills, or wizard. The Buddha is often put in this category.

In Chinese mythology and folklore, there is a famous group of eight immortals (八仙).

The 楞嚴經 (Śūraṅgama Sūtra) speaks of many kinds of immortals including walkers on the earth, fliers, wanderers at will (into space or into the deva heavens), beings with the ability to transform themselves into any form, etc.

不朽 means immortal or immortality in Chinese, Japanese Kanji, and old Korean Hanja.

The literal translation is “without decay” or “never rotting.” This title speaks of something or someone who never dies and thus never rots or decays.

This can also be translated as everlasting, eternal, or imperishable.

永生 are the last two words from John 3:16 in the Chinese Union Bible.

Although not specifically Christian, this is the way to express ever-lasting life or eternal life in Chinese.

In Japanese, this can either mean eternal life or immortality.

See Also:  Eternity | Rebirth | Reincarnation | Immortality

三魂 is a Daoist / Taoist term, “three immortal souls.”

魂 means soul or spirit as in the immortal soul that can be detached from the body.

This can also refer to one's Yang energy or spirit.

In the Buddhist context, this can be the soul, conscious mind, or vijñāna.

魂の伴侶 is a Japanese-only title for soulmates.

魂 means soul, spirit, immortal soul (the part of you that lives beyond your physical body), or the conscious mind. In the Buddhist context, this is vijñāna or viññāṇa (consciousness, life force, or mind).

の is a possessive article that connects everything here.

伴侶 means mates, companions, partners, and spouses.

魂の友 is one of a few ways to write “Soul Mates” in Japanese.

The first Kanji means soul, spirit, ghost, immortal soul, the mind, or conscious mind. From Sanskrit, it's Vijñāna.

The middle character is a Japanese Hiragana connecting or possessive article that links the two ideas together.

The last Kanji means friends or friendship.