inherent aptitude vs instinct

inherent aptitude and instinct both are nouns.

Word	Noun	Adjective	Verb	Adverb
inherent aptitude	Yes	No	No	No
instinct	Yes	Yes	No	No

As nouns, inherent aptitude and instinct are synonyms defined as:

inherent aptitude and instinct: inborn pattern of behavior often responsive to specific stimuli

inherent aptitude (noun)	instinct (noun)
inborn pattern of behavior often responsive to specific stimuli	inborn pattern of behavior often responsive to specific stimuli

inherent aptitude (adjective)	instinct (adjective)
	(followed by `with') deeply filled or permeated