reconstruct vs construction

reconstruct is not a noun while construction is a noun.

Word	Noun	Adjective	Verb	Adverb
reconstruct	No	No	Yes	No
construction	Yes	No	No	No

reconstruct (noun)	construction (noun)
	the act of constructing something
	the commercial activity involved in repairing old structures or constructing new ones
	drawing a figure satisfying certain conditions as part of solving a problem or proving a theorem
	a thing constructed; a complex entity constructed of many parts
	the creation of a construct; the process of combining ideas into a congruous object of thought
	an interpretation of a text or action
	a group of words that form a constituent of a sentence and are considered as a single unit

reconstruct (verb)	construction (verb)
do over, as of (part of) a house
cause somebody to adapt or reform socially or politically
reassemble mentally
build again
return to its original or usable and functioning condition