Some written expressions about Japanese

The 50-yin diagram can represent the pronunciation of Japanese and can also form a Japanese word. Just like the example you gave, it is written as "50-yin図" in Japanese, but its pronunciation is " "ごじゅうおんず" is a bit like Chinese pinyin.

However, the difference between it and Chinese pinyin is that pinyin cannot form words or sentences, but the fifty syllables, hiragana, and katakana can form words or sentences. For example:

"I am a student" is written as "private student."

I hope my answer will be helpful to you.