What do the following words have in common?

1. ERR

2. BRED

3. HOVER

4. BROOM

 

HINTS:

A. The same word can be added or inserted into each clue word to make a new word or phrase.

B. The added or inserted word has three letters.

 

Answer:

The word AND can be added or inserted into each clue word to make a new word or phrase:

1. ERRAND

2. BRANDED

3. HAND OVER

4. BAND ROOM

Credit:

Robert Charlton