reconstruct vs speculate

reconstruct and speculate both are verbs.

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

As verbs, speculate is a hypernym of reconstruct; that is, speculate is a word with a broader meaning than reconstruct:

Other hypernyms of reconstruct include conjecture, hypothecate, hypothesise, hypothesize, suppose, theorise, theorize.

reconstruct (verb)	speculate (verb)
do over, as of (part of) a house	reflect deeply on a subject
cause somebody to adapt or reform socially or politically	to believe especially on uncertain or tentative grounds
reassemble mentally	talk over conjecturally, or review in an idle or casual way and with an element of doubt or without sufficient reason to reach a conclusion
build again	invest at a risk
return to its original or usable and functioning condition