Trinity - The unbreakable bond between Kirk, Spock, and McCoy.

Shipmates - The rest of the gang, including his Vulcan protégés.

Family - The wise Sarek, the gentle Amanda, and the nutty Sybok.

Relationships - Fleeting and awkward encounters with the fairer sex.

Comparisons - "Outsider" Star Trek characters Spock has inspired.

Places

Vulcan - The first planet to contact Earth, but still a mystery.

Romulus - Enemy planet where Spock strives for reunification.

Starfleet - The military and exploration branch of the Federation.