Wiktionary
coas
init. 1 chief of army staff 2 courses of action 3 charter ownership agreements
Wikipedia
Coaș
Coaș is a commune in Maramureș County, Romania. It is composed of two villages, Coaș and Întrerâuri (Láposköz). These were part of Săcălășeni Commune from 1968 to 2004, when they were split off to recreate a separate commune.
Usage examples of "coas".
So instead of coassë "in a house", plural coassen "in houses", one may perhaps use the shorter forms coas, pl.