waiting / weighting 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. 👇
waiting: (adjective) being and remaining ready and available for use.
weighting: NA
waiting: w·EY·t·ih·ng
weighting: w·EY·t·ih·ng
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)