pointer, token, basis for judgment, formula, ratio, rule, average, average rate, average price, sign, symbol, indication, indicant, guide; see also criterion.
An alphabetic arrangement
tabular matter, contents, book index, guide to publications, bibliography, bibliographical work, catalog, card file, book list, appendix, end list, directory, dictionary; see also catalog, file 2, list, record 1, table 2.
Another word for index
Something visible or evident that gives grounds for believing in the existence or presence of something else: badge, evidence, indication, indicator, manifestation, mark, note, sign, signification, stamp, symptom, token, witness. See show