The words feints, faints sound the same but have different meanings and spellings. Why do feints, faints sound the same even though they are completely different words?
The answer is simple: feints, faints are homophones of the English language.
Plural form of faint.
The impure spirit that comes over first (the strong faints) and last (the weak faints) in the distillation of whisky, much impregnated with fusel oil.
To make a feint.
A feigned attack designed to draw defensive action away from an intended target.
A deceptive action calculated to divert attention from one's real purpose. See Synonyms at wile.
To deceive with a feint.
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.