myelin vs medulla

myelin and medulla both are nouns.

Word	Noun	Adjective	Verb	Adverb
myelin	Yes	No	No	No
medulla	Yes	No	No	No

As nouns, myelin and medulla are synonyms defined as:

myelin and medulla: a white fatty substance that forms a medullary sheath around the axis cylinder of some nerve fibers

Other synonyms of myelin include myeline.

myelin (noun)	medulla (noun)
a white fatty substance that forms a medullary sheath around the axis cylinder of some nerve fibers	the inner part of an organ or structure in plant or animal
	lower or hindmost part of the brain; continuous with spinal cord; (`bulb' is an old term for medulla oblongata)
	a white fatty substance that forms a medullary sheath around the axis cylinder of some nerve fibers