apt vs given

apt is not a noun while given is a noun.

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

As adjectives, apt and given are synonyms defined as:

Other synonyms of apt include disposed, minded, tending.

apt (noun)	given (noun)
	an assumption that is taken for granted

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