1. What do the following words have in common?

DEFY 

WORST

HIJACK

CRAB CAKE 

2.What do the following words have in common?

STONE

SHIVER

SEATS

FLIES

THEIRS

Answers:

 

1. Each word contains three consecutive letters of the alphabet:

    DEFy, woRST, HIJack, crAB Cake

 

2. Dropping both the first and last letter of each word leaves a valid word:

    _TONE_

    _HIVE_

    _EAT_

    _LIE_

    _ HEIR_