指甲 in English:

To a man with a hammer, everything looks like a nail.

What's your favorite nail polish?

I'm looking for a lipstick to go with this nail polish.

Mary changes her nail color almost every day.

I like your nail polish. / Can you help me with knocking this long nail into the wall?

bite your nails

I wonder if they don't have meetings anymore where strong words fly and everyone goes at each other tooth and nail.

She usually uses nail scissors.

Nail polish remover stinks a lot.

to nail the lid on a box

I have beautiful nails coz I eat lots of fruit.

It was hard work driving nails into the wall as most of them kept bending.

They looked as though their feet had been nailed to the floor.

The police finally nailed him for fraud

The siblings are fighting tooth and nail over the estate their father left them in his will.