qepHom 2015: The Klingon word for core (of an apple, for example) is SuqSIv. Is this restricted to fruit, or can this also be used for the core of a planet, or the sun? Yes, it could be the core of anything, the inside of something (but of course not the core of a group, which we know is qolqoS). It doesn't have to be a fruit, and it doesn't have be something that you throw away.