fairs / fares 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. 👇
fairs: (noun) gathering of producers to promote business. (noun) a competitive exhibition of farm products. (verb) join so that the external surfaces blend smoothly.
fares: (noun) the sum charged for riding in a public conveyance. (noun) a paying (taxi) passenger. (noun) the food and drink that are regularly served or consumed. (verb) eat well.
fairs: f·EH·r·z
fares: f·EH·r·z
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)