explicate vs conjecture

explicate is not a noun while conjecture is a noun.

Word	Noun	Adjective	Verb	Adverb
explicate	No	No	Yes	No
conjecture	Yes	No	Yes	No

As verbs, conjecture is a hypernym of explicate; that is, conjecture is a word with a broader meaning than explicate:

Other hypernyms of explicate include hypothecate, hypothesise, hypothesize, speculate, suppose, theorise, theorize.

explicate (noun)	conjecture (noun)
	a hypothesis that has been formed by speculating or conjecturing (usually with little hard evidence)
	reasoning that involves the formation of conclusions from incomplete evidence
	a message expressing an opinion based on incomplete evidence

explicate (verb)	conjecture (verb)
make plain and comprehensible	to believe especially on uncertain or tentative grounds
elaborate, as of theories and hypotheses