The words in each set have a common connection, something that bonds all three of them in some way, shared features or characteristics...a manifestation of common attributes.
Can you find a Commonality?
= 1. NEW MOON BOB; FLEMISH BOB; BOHEMIAN BOB
= 2. POT; MUD; COCONUT CREAM
= 3. SAM; AL; ZIGGY
= 4. AL; AL, JR; BOBBY
= 5. BULL RUN; BALL'S BLUFF; SHILOH
= 6. DAVY CROCKETT; DANIEL BOONE; RALPH KRAMDEN
= 7. FIR; FIG; CEDAR
= 8. PAUL WINCHELL; SHARI LEWIS; EDGAR BERGEN
= 9. MARCIANO; GRAZIANO; BALBOA
= 10. LINCOLN; FORD; DODGE