, 22 September 2011 (UTC) ::::Good, “fractions” and “ratios” are ways to write numbers. You agree, I think. But when I say that the words “fractions” and “ratios” are interchangeable in this stage  of the introduction, you disagree. Therefore, the two words are not synonyms in your mind — in any reference, a definition will be written with words —. Would you tell us, please, in what place of this introduction  we see that these words are not synonyms.  13:28