inc / ink 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. 👇
inc: NA
ink: (noun) a liquid used for printing or writing or drawing. (noun) dark protective fluid ejected into the water by cuttlefish and other cephalopods. (verb) append one's signature to. (verb) mark, coat, cover, or stain with ink. (verb) fill with ink.
inc: IH·ng·k
ink: IH·ng·k
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)