I’m a flat piece of wood. Too thin to be a log, too long to be a block. Step on me wrong and you’ll hit the water. Nail me together and I become a bridge. What am I?

I'm a triangle as a piece, but as a whole I'm a circle and I live in a square. What am I?

I have a plug, but no electricity. You can often find me in bathrooms or kitchens. Heavy objects may do this in water. Or you might refer to your heart doing this if you get bad news. What 4 letter word am I?

The scent of bread drifts through my aisles, while carts roll to and fro. Fresh meat is weighed behind the glass, and shoppers come and go.

False. Clock. Fire. What word do we all have in common?