knead / kneed / need 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. 👇
knead: (verb) make uniform.
kneed: NA
need: (noun) a condition requiring relief. (noun) anything that is necessary but lacking. (verb) have or feel a need for.
knead: n·IY·d
kneed: n·IY·d
need: n·IY·d
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)