nephron vs uriniferous tubule

nephron and uriniferous tubule both are nouns.

Word	Noun	Adjective	Verb	Adverb
nephron	Yes	No	No	No
uriniferous tubule	Yes	No	No	No

As nouns, nephron and uriniferous tubule are synonyms defined as:

nephron and uriniferous tubule: any of the small tubules that are the excretory units of the vertebrate kidney

nephron (noun)	uriniferous tubule (noun)
any of the small tubules that are the excretory units of the vertebrate kidney	any of the small tubules that are the excretory units of the vertebrate kidney