clew / clue 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. 👇
clew: (noun) a ball of yarn or cord or thread.
clue: (noun) evidence that helps to solve a problem. (verb) roll into a ball.
clew: NA
clue: k·l·UW
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)