The material presented here has been supported in part by NSF Grant Award 1951923 "Achumawi (Pit River; acv) linguistic database: Analysis and Dissemination" (Implementing a linguistic database for analysis of an endangered language) (2020-2023). Prior support has included NEH Grant PD-250041-16 "Achumawi (Pit River; acv) linguistic database" (2016-2019), and NEH Fellowship FN-50116-13 "Building an Achumawi linguistic database" (2013-2014). “Any views, findings, conclusions, or recommendations expressed in this database, app, and related resources do not necessarily represent those of the National Endowment for the Humanities.”