Homophones that are spelled the same are also both homographs and homonyms. These are homographs that are not homophones. For a list of homographs with different pronunciations (heteronyms) see List of homographs. Homographs are words with at least two meanings. But as already mentioned, the control of synonyms, homographs can help increase precision. Controlled vocabularies also typically handle the problem of homographs with qualifiers. The Cantonese study distinguish homographs and determine the readings for rarely used characters. This can result in homographs (more than one sign spelled the same way). Another studied considered how anxiety influenced which meaning of homographs was chosen. Many Chinese varieties have homographs, called () or (), (). It also removes any confusion caused by homographs by inclusion of a qualifying term. Homophonic heterographs are very frequent in Chinese, whereas heterophonic homographs are not.