The five pairs of definitions below have something in common. Can you determine what it is?

1)
Land measure unit
To be concerned

2)
Big high school dance
Frolic boisterously

3)
A flat-topped hill
Clone-like

4)
Circumference
Legal entitlement

5)
Bounds
Court statements

Answers:

1. ACRE - CARE
2. PROM - ROMP 
3. MESA - SAME
4. GIRTH - RIGHT
5. LEAPS - PLEAS

The paired answer words are anagrams.