Packages abiword and abiword-common uses non-free font names - i.e. if available then non-free fonts are favord.
PureOS includes none of the non-free fonts declared, and includes (as is quite common) translation tables to seemlessly use Free fonts instead.
[[ https://git.parabola.nu/abslibre.git/tree/libre/abiword/liberation-fonts.patch | Parabola patch ]]