The answers to the five clues below, in order, will have something in common. Can you determine what it is?

1. African "earth pig"

2. Elizabeth or Victoria

3. Native of #50

4. What Nixon said he wasn't

5. There's nothing to it.

HINT:

It has to do with vowels.

Answers:

The answer words contain double vowels in sequence:

1. AARDVARK

2. QUEEN

3. HAWAIIAN

4. CROOK

5. VACUUM