efface vs humble

efface is not an adjective while humble is an adjective.

Word	Noun	Adjective	Verb	Adverb
efface	No	No	Yes	No
humble	No	Yes	Yes	No

As verbs, humble is a hypernym of efface; that is, humble is a word with a broader meaning than efface:

efface (adjective)	humble (adjective)
	marked by meekness or modesty; not arrogant or prideful
	low or inferior in station or quality
	of low birth or station (`base' is archaic in this sense)
	used of unskilled work (especially domestic work)

efface (verb)	humble (verb)
remove completely from recognition or memory	cause to feel shame; hurt the pride of
remove by or as if by rubbing or erasing	cause to be unpretentious
make inconspicuous