closed fracture vs simple fracture

closed fracture and simple fracture both are nouns.

Word	Noun	Adjective	Verb	Adverb
closed fracture	Yes	No	No	No
simple fracture	Yes	No	No	No

As nouns, closed fracture and simple fracture are synonyms defined as:

closed fracture and simple fracture: an uncomplicated fracture in which the broken bones to not pierce the skin

closed fracture (noun)	simple fracture (noun)
an uncomplicated fracture in which the broken bones to not pierce the skin	an uncomplicated fracture in which the broken bones to not pierce the skin