stair / stare 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. 👇
stair: NA
stare: (noun) a fixed look with eyes open wide. (verb) fixate one's eyes.
stair: s·t·EH·r
stare: s·t·EH·r
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)