What the noises usually mean
A clunk over bumps often points at sway bar links or worn bushings — frequently one of the cheaper repairs on the car. A knock when turning at low speed can be a CV joint. A groan when turning suggests power steering. Continued bouncing after a bump points at shocks or struts.
Why it matters for stopping
A shock that no longer controls the spring lets the tyre lose contact with the road under braking. That is a safety issue, not a comfort one, and it does not show up until you need to stop hard.