Central parts are the innermost components of an object or system. The crossword solutions for the term central parts include NUCLEI (6 letters), cores (5 letters), NUBS (4 letters), GISTS (5 letters), INNARDS (7 letters), HUBS (4 letters), inners (6 letters), and navels (6 letters). NUCLEI are the central part of an atom, while cores are the central parts of fruits or vegetables. NUBS are small, rounded protrusions, while GISTS refer to the main points of a story or argument. INNARDS are the internal organs of a living creature, while HUBS are the central points of a wheel or network. Inners are the innermost layers of something, while navels are the central parts of the abdomen. Finally, KERNELS are the central parts of nuts or grains.