airing / erring 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. 👇
airing: (noun) a short excursion (a walk or ride) in the open air.
erring: (verb) to make a mistake or be incorrect. (adjective) capable of making an error.
airing: EH·r·ih·ng
erring: EH·r·ih·ng
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)