political system vs structure

political system and structure both are nouns.

Word	Noun	Adjective	Verb	Adverb
political system	Yes	No	No	No
structure	Yes	No	Yes	No

political system (noun)	structure (noun)
the members of a social organization who are in power	a thing constructed; a complex entity constructed of many parts
	the manner of construction of something and the arrangement of its parts
	a particular complex anatomical part of a living thing and its construction and arrangement
	the complex composition of knowledge as elements and their combinations
	the people in a society considered as a system organized by a characteristic pattern of relationships

political system (verb)	structure (verb)
	give a structure to