My friend's last name is Munn.

My friend's last name is Munns.

The munnion of the window was beautifully carved.

The munnions on the gate were beautifully crafted.

The munnopsoid is a fascinating deep-sea crustacean.

The munnopsoids are fascinating creatures that inhabit the deep sea.

Munnerlyn is a common surname in the southern United States.

The Munnerlyns are a close-knit family.

The munnopsids are small crustaceans found in deep-sea habitats.

The munnopsid isopod scurried across the ocean floor.