undeveloped vs untapped

undeveloped and untapped both are adjectives.

Word	Noun	Adjective	Verb	Adverb
undeveloped	No	Yes	No	No
untapped	No	Yes	No	No

undeveloped (adjective)	untapped (adjective)
not developed, mature, or fully formulated	not subjected to tapping
not developed, improved, exploited or used	not drawn upon or used