apt vs apposite

apt and apposite both are adjectives.

Word	Noun	Adjective	Verb	Adverb
apt	No	Yes	No	No
apposite	No	Yes	No	No

As adjectives, apt and apposite are synonyms defined as:

Other synonyms of apt include pertinent.

apt (adjective)	apposite (adjective)
being of striking appropriateness and pertinence	being of striking appropriateness and pertinence
(usually followed by `to') naturally disposed toward
mentally quick and resourceful
at risk of or subject to experiencing something usually unpleasant