analysis vs complex

analysis and complex both are nouns.

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

analysis (noun)	complex (noun)
an investigation of the component parts of a whole and their relations in making up the whole	a whole structure (as a building) made up of interconnected or related structures
a set of techniques for exploring underlying motives and a method of treating various mental disorders; based on the theories of Sigmund Freud	a conceptual whole made up of complicated and related parts
the abstract separation of a whole into its constituent parts in order to study the parts and their relations	(psychoanalysis) a combination of emotions and impulses that have been rejected from awareness but still influence a person's behavior
a branch of mathematics involving calculus and the theory of limits; sequences and series and integration and differentiation	a compound described in terms of the central atom to which other atoms are bound or coordinated
a form of literary criticism in which the structure of a piece of writing is analyzed
the use of closed-class words instead of inflections: e.g., `the father of the bride' instead of `the bride's father'

analysis (adjective)	complex (adjective)
	complicated in structure; consisting of interconnected parts
	difficult to analyze or understand