This article analyzes Marshallese pronouns and demonstratives, arguing that both privative and binary morphosemantic features are necessary, and that the two types coexist in a single domain. Marshallese encodes number with atomic, and person with [
$\pm$author] and [
$\pm$participant]. In the complex system of Marshallese demonstratives, atomic and [
$\pm$human] map to the same head, subject to a constraint that only one feature appears at a time. The element
$\chi$, which derives person orientation in demonstratives and pronouns, does not universally map to the same syntactic position. While in Heiltsuk
$\chi$ is a dependent of the person head, in Marshallese it heads a projection above the person head. And while in Heiltsuk the person features occupy the same position in both pronouns and demonstratives, Marshallese pronouns have a different structure, with person and number features mapping to a single syntactic head. The contribution of UG is thus not a set of specific features or specific structures, but a set of more abstract principles.