One of the words in Group A needs to be swapped with one of the words in Group B so that all the words in each group will have something in common. The common element will be different for each group. Which words should be swapped, and what does each group have in common?

Group A: 

Rock, Walk, Fish, Phase, Shot

 

Group B:

Chart, Board, Crossed, Chamber, Landing 

 

Answer:

 

Fish from Group A should be swapped with Landing in Group B.  

Group A words can follow MOON.

Group B words can follow STAR.

 

Credit:

Braingle