readability vs legibility

readability and legibility both are nouns.

Word	Noun	Adjective	Verb	Adverb
readability	Yes	No	No	No
legibility	Yes	No	No	No

As nouns, readability and legibility are synonyms defined as:

readability and legibility: a quality of writing (print or handwriting) that can be easily read

readability (noun)	legibility (noun)
the quality of written language that makes it easy to read and understand	a quality of writing (print or handwriting) that can be easily read
a quality of writing (print or handwriting) that can be easily read	distinctness that makes perception easy