Terms for subject Informal containing core

English	Russian
core of an apple	огрызок яблока
hard-core	отъёмный
soft-core porn	софт-порно (Юрий Гомон)
the core	на все сто (she's still Chinese to the core Val_Ships)
the core of the matter	суть дела (Damirules)
to the core	с головы до пят (He's a ​Conservative to the core. Val_Ships)
to the core	целиком и полностью (He's convinced that the army is rotten to the core. Val_Ships)