The words succulents, succulence sound the same but have different meanings and spellings. Why do succulents, succulence sound the same even though they are completely different words?
The answer is simple: succulents, succulence are homophones of the English language.
The property of being succulent.
Plural form of succulent.
Definitions from Wiktionary, Creative Commons Attribution/Share-Alike License and Wordnik.
Homophones (literally "same sound") are usually defined as words that share the same pronunciation, regardless of how they are spelled.