retiring vs self-effacing

retiring and self-effacing both are adjectives.

Word	Noun	Adjective	Verb	Adverb
retiring	No	Yes	No	No
self-effacing	No	Yes	No	No

As adjectives, retiring and self-effacing are synonyms defined as:

Other synonyms of retiring include reticent.

retiring (adjective)	self-effacing (adjective)
not arrogant or presuming	reluctant to draw attention to yourself
of a person who has held and relinquished a position or office
reluctant to draw attention to yourself