modest vs retiring

modest and retiring both are adjectives.

Word	Noun	Adjective	Verb	Adverb
modest	No	Yes	No	No
retiring	No	Yes	No	No

modest (adjective)	retiring (adjective)
not offensive to sexual mores in conduct or appearance	not arrogant or presuming
marked by simplicity; having a humble opinion of yourself	of a person who has held and relinquished a position or office
humble in spirit or manner; suggesting retiring mildness or even cowed submissiveness	reluctant to draw attention to yourself
low or inferior in station or quality
relatively moderate, limited, or small
not large but sufficient in size or amount
free from pomp or affectation