The Muipidan word for “root” is the tongue-twistery tedendede [ˈte.dɛˌⁿde.də]. Like in Kharulian, it has metaphorical meanings like “mouth of a river” and “destination”; these tree-river metaphors are found in languages throughout the Three Rivers region.
The Nitherian word is vano [ˈva.no], though this only refers to inedible roots. Edible root vegetables are called chori [ˈtɕo.ri] instead, a word that originally just referred to the cassava root before being extended to all edible roots and tubers.
The Kharulian word for “arm” is pélyekh [ˈpe.lʲɛç], which also means “elbow”. It’s one of a family of Kharulian nouns with consonant-switching oblique stems, which I also talked about in a Lexember post. For example, the accusative form is pekhlyo [ˈpɛç.lʲo], while the nominative plural is pikhlya [ˈpiç.lʲə].