lens cortex vs cortex

lens cortex and cortex both are nouns.

Word	Noun	Adjective	Verb	Adverb
lens cortex	Yes	No	No	No
cortex	Yes	No	No	No

As nouns, lens cortex and cortex are synonyms defined as:

lens cortex (noun)	cortex (noun)
the tissue that surrounds the lens nucleus	the tissue forming the outer layer of an organ or structure in plant or animal
	the layer of unmyelinated neurons (the grey matter) forming the cortex of the cerebrum
	the tissue that surrounds the lens nucleus