ureter (the duct by which urine passes from the kidney to the bladder)
urethr/o
urethra (the duct by which urine is conveyed out of the body from the bladder, and which in male vertebrates also conveys semen)
ur/o
urine
uter/o
uterus (the organ in the lower body of a woman or female mammal where offspring are conceived and in which they gestate before birth; the womb)
vertebr/o
vertebrae (each of the series of small bones forming the backbone, having several projections for articulation and muscle attachment, and a hole through which the spinal cord passes)