interlinking vs complex

interlinking is not a noun while complex is a noun.

Word	Noun	Adjective	Verb	Adverb
interlinking	No	Yes	No	No
complex	Yes	Yes	No	No

interlinking (noun)	complex (noun)
	a whole structure (as a building) made up of interconnected or related structures
	a conceptual whole made up of complicated and related parts
	(psychoanalysis) a combination of emotions and impulses that have been rejected from awareness but still influence a person's behavior
	a compound described in terms of the central atom to which other atoms are bound or coordinated

interlinking (adjective)	complex (adjective)
linked or locked closely together as by dovetailing	complicated in structure; consisting of interconnected parts
	difficult to analyze or understand