The helmeted guinea fowl is a bird native to Africa.

The helmeted guineafowl is a common game bird found in Africa.

The helmetcams captured the thrilling moments of the race.

He recorded his bike ride using a helmetcam.

I found a beautiful helmet snail on the beach.

I found a group of helmet snails on the beach.

I found several helmet shells on the beach.

The helmet shell is a type of marine snail with a distinctive shell shape.

He wore a horned helmet during the battle.

Helmert transformations are commonly used in geodesy to convert coordinates between different reference frames.