The words pall, pol sound the same but have different meanings and spellings. Why do pall, pol sound the same even though they are completely different words?
The answer is simple: pall, pol are homophones of the English language.
fine cloth, especially purple cloth used for robes
to make <xref>vapid</xref> or <xref>insipid</xref>; to make lifeless or spiritless; to dull; to weaken
To become vapid, tasteless, dull, or insipid; to lose strength, life, spirit, or taste.
To satiate; to cloy.
Definitions from Wiktionary, Creative Commons Attribution/Share-Alike License., from the GNU version of the Collaborative International Dictionary of English., from The American Heritage® Dictionary of the English Language, 5th Edition. and Wordnik.
Homophones (literally "same sound") are usually defined as words that share the same pronunciation, regardless of how they are spelled.