Urea has 2 different meanings across 1 category:
Noun
the chief solid component of mammalian urine; synthesized from ammonia and carbon dioxide and used as fertilizer and in animal feed and in plastics
"The farmer spread urea on his fields to boost crop growth, relying on its high nitrogen content derived from synthetic processes."
A water-soluble organic compound, CO(NH₂)₂, formed by the metabolism of proteins and excreted in the urine.
"After a heavy protein meal, his kidneys worked overtime to filter out the excess urea produced during digestion."