cubit / qubit 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. 👇
cubit: (noun) an ancient unit of length based on the length of the forearm.
qubit: NA
cubit: k·y·UW·b·ih·t
qubit: NA
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)