ai / aye / eye / i are similar-sounding terms with different meanings (referred to as homophones). To better understand the differences, see below for definitions, pronunciation guides, and example sentences using each term. 👇
ai: NA
aye: NA
eye: (noun) the organ of sight. (noun) good discernment (either visually or as if visually). (noun) attention to what is seen. (noun) a small hole or loop (as in a needle). (verb) look at.
i: (noun) the 9th letter of the Roman alphabet.
ai: AY
aye: AY
eye: AY
i: AY
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)