What do the following words have in common?

1. SO

2. CAR

3. HER

4. AHA

5 BLUR

6. PLUM 

Answer:

 

You can add a "B"at the end of each word to get a new one:

 

1. SOB

2. CARB

3. HERB

4. AHAB

5. BLURB

6. PLUMB