Cases of word usage

1) a row of stone or wooden banisters with a bar on top, built round a balcony etc (balustrade)

2) a row of columns (colonnade)

3) a flat object with a row of teeth, used for making the hair tidy (comb)

4) (something shaped like) the curve of the moon in the first quarter (especially a row of houses) (crescent)

5) a row of bushes, shrubs or tall plants etc forming a boundary for field, garden etc (hedge)