caddie / caddy / cadi 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. 👇
caddie: (noun) an attendant who carries the golf clubs for a player. (verb) act as a caddie and carry clubs for a player.
caddy: (noun) a can for storing tea.
cadi: NA
caddie: NA
caddy: k·AE·d·iy
cadi: NA
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)