There's no special name for it beyond: typo. 'quiet' and 'quite' mean two very different things; one is an adverb meaning 'very', the other is an adjective mening 'silent'. their pronunciations are different enough; in GenAmE, they are not homophones (I don't know about other varieties).
Beside this, what is the difference between Except and accept?
accept/ except. To accept is to receive, and except is to exclude, usually. Both are busy little words skipping around to different meanings, but they never run into each other.
What is the effect and affect?
Most of the time, you'll want affect as a verb meaning to influence something and effect for the something that was influenced. The difference between affect and effect is so slippery that people have started using "impact" as a verb instead. Don't be one of them!
What is the homophone of affect?
Affect vs. Effect. In the ongoing wars between homophones, affect vs. effect is one of the most brutal fights on the battlefield. One is usually a noun (but not always) and the other is usually a verb (but not always).