強固 means firmness, stability, security, and strength in Japanese.

It's not used commonly in China, but it means “powerful,” “firm,” “solid,” “strong,” or “better than others” in Chinese. There is a slight variation in the top of the first character between Chinese and Japanese. Because this is more of a Japanese word, we are showing the Japanese form here.

強固 is also a Korean word, but Korean Hanja uses the Chinese form of the first character (one tiny stroke is a little different), so just let me know if your audience is Korean when you place your order, and we'll have it written in the Chinese/Korean version.

金剛不壞 is originally a Buddhist term for “The diamond indestructible.”

Sometimes, it's written 金剛不壞身, The diamond-indestructible body.

Outside that context, it still means firm and solid, sturdy and indestructible, unshakable, or adamantine (a mythological indestructible material).

Note: If you order this from the Japanese master calligrapher, the last Kanji will look like the one shown to the right.

堅忍 means persistent, steadfast, fortitude, and/or perseverance.

The first character means strong, solid, firm, unyielding, or resolute.
The second character means to beat, endure, or tolerate.
Together they speak of the strength from within yourself. Some may also translate this as long-suffering in a more Biblical sense.

堅忍 is a common term in Chinese and Korean Hanja but a little less commonly used in modern Japanese Kanji. For that reason, this selection is best if your audience is Chinese or Korean.

Note that when writing this as Kanji, Japanese will tend to write the second Kanji a little differently. If you select our Japanese master calligrapher, please expect the form where the little horizontal stroke crosses the vertical stroke. See differences in the images to the right. Technically, they are both the same character, and will be read the same in either language.