The Ethiopian lexemes may find a convincing parallel in Proto-Berber *ta-mur-t- ‘earth’ (Militarev 2004:307, 2010:64).
The etymology of Proto-EthS *nbr ‘to sit’ is unknown, cf. perhaps Arb. nabūr- = ˀal-ˀist- (LA 5 222). Of some interest may be Akk. wabru ‘Ortsfremder, Beisasse’ (AHw. 1454), ‘a type of foreigner’ (CAD U/W 388), the semantic shift from “to sit” being illustrated by one of the German translations above as well as by Hbr. tōšāb ‘resident alien, sojourner’ (HALOT 1712).
The origin of Proto-EthS *ndd ‘to burn’ is uncertain. Leslau tentatively compares Arb. ndˀ ‘to cast flesh-meat into the fire, to bury a cake of bread in hot ashes’ (Lane 2778).
The origin of Proto-EthS *ngd ‘to travel’ is uncertain.