urea vs carbamide

urea and carbamide both are nouns.

Word	Noun	Adjective	Verb	Adverb
urea	Yes	No	No	No
carbamide	Yes	No	No	No

As nouns, urea and carbamide are synonyms defined as:

urea and carbamide: the chief solid component of mammalian urine; synthesized from ammonia and carbon dioxide and used as fertilizer and in animal feed and in plastics

urea (noun)	carbamide (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 chief solid component of mammalian urine; synthesized from ammonia and carbon dioxide and used as fertilizer and in animal feed and in plastics