underlying vs implicit in

underlying and implicit in both are adjectives.

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

As adjectives, underlying and implicit in are synonyms defined as:

underlying and implicit in: in the nature of something though not readily apparent

Other synonyms of underlying include inherent.

underlying (adjective)	implicit in (adjective)
being or involving basic facts or principles	in the nature of something though not readily apparent
in the nature of something though not readily apparent
located beneath or below