leak / leek 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. 👇
leak: (noun) an accidental hole that allows something (fluid or light etc.) to enter or escape. (noun) soft watery rot in fruits and vegetables caused by fungi. (noun) a euphemism for urination. (noun) unauthorized (especially deliberate) disclosure of confidential information. (verb) tell anonymously. (verb) be leaked. (verb) enter or escape as through a hole or crack or fissure. (verb) have an opening that allows light or substances to enter or go out.
leek: (noun) plant having a large slender white bulb and flat overlapping dark green leaves; used in cooking; believed derived from the wild Allium ampeloprasum. (noun) related to onions; white cylindrical bulb and flat dark-green leaves.
leak: l·IY·k
leek: l·IY·k
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)