reconstruction vs reconstruct

reconstruction is a noun but reconstruct is not a noun.

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

reconstruction (noun)	reconstruct (noun)
the activity of constructing something again
recall that is hypothesized to work by storing abstract features which are then used to construct the memory during recall
an interpretation formed by piecing together bits of evidence

reconstruction (verb)	reconstruct (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