The words bonds, bonze sound the same but have different meanings and spellings. Why do bonds, bonze sound the same even though they are completely different words?
The answer is simple: bonds, bonze are homophones of the English language.
imprisonment, captivity
the condition of goods in a bonded warehouse until duty is paid
Plural form of bond.
Third-person singular simple present indicative form of bond.
A Buddhist monk, especially of China, Japan, or nearby countries.
Definitions from Wiktionary, Creative Commons Attribution/Share-Alike License, from The American Heritage® Dictionary of the English Language, 4th Edition and Wordnik.
Homophones (literally "same sound") are usually defined as words that share the same pronunciation, regardless of how they are spelled.
If they are spelled the same then they are also homographs (and homonyms); if they are spelled differently then they are also heterographs (literally "different writing").