The car is a '96 Corolla. Before sending the car to a mechanic, I wanna ask you guys which part do you think is the suspect for the noise.

The lagutok is heard during:
- (car at full stop) then turning steering wheel either left or right
- (car is slowly running/moving) towards a hump or uneven surface (note: there's still lagutok even if steering wheel is not turned during these times)
- (car at full stop) i went out and try bouncing/yanking the car up and down

I'm confused if the problem is in the steering mechanism or the suspension system itself. Need your expert advice. Thank you very much guys!