Plumbing
Part of speech: noun
Definition: The pipes, together with the joints, tanks, stopcocks, taps and other fixtures of a water, gas or sewage system in a house or other building. The trade or occupation of a plumber. A system of vessels or ducts in the human body, especially the genitourinary system. A Murasugi sum where each disk summed along has its boundary subdivided into four segments.
Example sentence: Had I been more responsible I might have made something of myself as a junk bond trader, long-haul trucker or perhaps a plumbing contractor.
Bathymetry
Part of speech: noun
Definition: The measurement of the depths of the seas