A '''usage category''' is a criteriacriterion for [[word usage]] based on the annual surveys by {{tok|[[Linku]]}}. These are a more granular, more frequently updated replacement for the [[book presence]] categories.<ref>{{cite YouTube|url=https://www.youtube.com/watch?v=wrFB1ETL1Hg|title={{tp|wile sona nimi}}|name={{tok|kala Asi}}|channel={{tok|kala Asi}}|handle=kala_asi|date=2023-08-07|archive-url=https://web.archive.org/web/20231018173305/https://www.youtube.com/watch?v=wrFB1ETL1Hg|archive-date=2023-10-18|access-date=2023-10-18}}</ref>