humble vs efface

humble is an adjective but efface is not an adjective.

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

As verbs, efface is a hyponym of humble; that is, efface is a word with a more specific, narrower meaning than humble:

humble (adjective)	efface (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)

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