adds / ads / adze 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. 👇
adds: (verb) make an addition (to); join or combine or unite with others; increase the quality, quantity, size or scope of. (verb) state or say further. (verb) make an addition by combining numbers. (verb) constitute an addition.
ads: (noun) a public promotion of some product or service.
adze: NA
adds: AE·d·z
ads: AE·d·z
adze: NA
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)