flower shop; florist
Refers to the shop itself or the person who sells flowers. Context usually makes the distinction clear.
駅前の花屋でバラを買った。
I bought roses at the flower shop in front of the station.
彼女は花屋で働いている。
She works at a florist.
I bought a bouquet of roses at the flower shop near the station.
My grandmother has been running a flower shop for many years.
When I was a university student, I worked at a flower shop.