He took the sharp weapon in his hand and advanced towards the enemy.

I am amazed at his keen observation skills.

Cut your nails.

She had her nails nicely painted.

She cut her nails using a nail clipper.

He pointed out people's flaws, saying 'there are claws in the melon, but none in the claw.'

His dynamic visual acuity as a baseball player is very excellent.

I am planning to take an eyesight test today.

I use strong flour to make bread.

His name is pronounced with a sharp accent.