Noun

stone (of a fruit); pit; pip

core (of an organization, team, etc.); nucleus; heart

Noun, Noun which may take the genitive case particle 'no'

nuclear weapons

see 核兵器

Noun

nucleus (of an atom)

Physicssee 原子核

nucleus (of a cell)

Biologysee 細胞核

condensation nucleus

Meteorologysee 凝結核

(planetary) core

Astronomy

ring (in a cyclic compound)

Chemistry

kernel; core

Mathematics

nucleus (of a cultured pearl)