dialect vs eye dialect

dialect and eye dialect both are nouns.

Word	Noun	Adjective	Verb	Adverb
dialect	Yes	No	No	No
eye dialect	Yes	No	No	No

As nouns, eye dialect is a hyponym of dialect; that is, eye dialect is a word with a more specific, narrower meaning than dialect:

dialect: the usage or vocabulary that is characteristic of a specific group of people
eye dialect: the use of misspellings to identify a colloquial or uneducated speaker

Other hyponyms of dialect include patois.

dialect (noun)	eye dialect (noun)
the usage or vocabulary that is characteristic of a specific group of people	the use of misspellings to identify a colloquial or uneducated speaker