isocolon
An isocolon is a figure of speech in which there are two or more parts of a sentence that are identical in length, rhythm, and structure. One of the most common isocolon examples in English is the merchandising slogan
“Buy one, get one.” In this sentence, “buy one” and “get one” are considered two cola which have equivalent length and rhythm, with the same grammatical structure. The definition of isocolon can be further broken into categories depending on the number of equivalent cola: bicolon, tricolon, or tetracolon for two, three, or four cola, respectively.