carat / caret / carrot / karat 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. 👇
carat: (noun) a unit of weight for precious stones = 200 mg.
caret: (noun) a mark used by an author or editor to indicate where something is to be inserted into a text.
carrot: (noun) deep orange edible root of the cultivated carrot plant. (noun) perennial plant widely cultivated as an annual in many varieties for its long conical orange edible roots; temperate and tropical regions. (noun) orange root; important source of carotene. (noun) promise of reward as in.
karat: (noun) the unit of measurement for the proportion of gold in an alloy; 18-karat gold is 75% gold; 24-karat gold is pure gold.
carat: k·EH·r·ah·t
caret: NA
carrot: k·AE·r·ah·t
karat: k·EH·r·ah·t
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)