力量 is a general strength term.

It can refer to mental or physical strength (depending on context). 力量 can also be used to describe strength in terms of capability, capacity, ability, and even tact. Some may translate this as power or force.

精神力量 is a title that speaks of one's soul or spirit and the capacity or strength that soul possesses.

The first two characters mean mind, heart, spirit, and/or soul.

The last two characters mean strength, capacity, or ability.

Note: Separately, these are two words in Japanese and can be pronounced, but this does not make a natural title in Japanese (best if your audience is Chinese).

力 is the simplest form of “power” or “strength.”

In Japanese, it is pronounced “chikara” when used alone, and “ryoku” when used in a sentence (there are also a few other possible pronunciations of this Kanji in Japanese).

In some contexts, this can mean ability, force, physical strength, capability, and influence.

See Also:  Strength | Vitality | Health

強 is a character that means strong, strength, force, powerful, better, stubborn, and stiff (yes, all of this in one character).

This “strong” has less to do with physical strength and more to do with having a winning attitude, or just having the ability to win at something.

Note that most of the time, this character is pronounced “qiang” but when used with the meaning of stubborn, unyielding, or stiff, it is pronounced “jiang” in Chinese.

Also, sometimes “qiang” is used in modern Chinese to describe people that do crazy things (For example: Bicycling from Beijing to Tibet alone). I sometimes can be found outside my Beijing apartment wearing nothing but shorts and a tee-shirt while eating ice cream during a snow storm, just to hear my neighbors call me “qiang.” Maybe they mean “strong” but perhaps they are using the new meaning of “crazy strong.”

強 can also be a Chinese surname that romanizes as Jiang in the mainland or Chiang if from Taiwan.

強 is a valid Korean Hanja character with the same meaning but is mostly used in compound Korean words.

強 is used in Japanese (though normally in compound words). In Japanese, it has the same meaning but in some contexts can mean “a little more than...” or “a little over [some amount].” Most Japanese would read this as tough, strength, stiff, hard, inflexible, obstinate, or stubborn.

The variant 彊 is sometimes seen in older literature.

想像力 is probably the best way to express “imagination” in Chinese, Japanese Kanji, and old Korean Hanja.

It literally means “your strength to imagine.” The last character means strength or ability, while the first two mean imagine or conceptualize. My Japanese dictionary defines this as “The power of imagination.” While my Korean dictionary says, “imaginative power.”