Description:

The term 'rua' means sand like beach sand - any fine, rocky grit that is too coarse to be natually airborne.

Noun:

As a noun, 'rua' means literal sand or rocky grit. Probably in a calque of English, 'rua' also means grit in the same sense at it means in English as a personal quality, conveying the sense of abrasiveness as well as will and perseverence.

Verb:

As a verb, 'rua' is a transitive skurun verb meaning to sand a surface, i.e., to smooth it using grit attached to a substrate or fluidised with air. It has an ergative sander and an absolutive thing sanded.

Modifier:

The modifier form 'ruas' means literally sandy or else having the quality of personal abrasiveness, perseverence or will. The form 'ruakas' means artificially smoothed or sanded.