underlying vs implicit

underlying and implicit both are adjectives.

Word	Noun	Adjective	Verb	Adverb
underlying	No	Yes	No	No
implicit	No	Yes	No	No

underlying (adjective)	implicit (adjective)
being or involving basic facts or principles	implied though not directly expressed; inherent in the nature of something
in the nature of something though not readily apparent	being without doubt or reserve
located beneath or below