conjecture vs explicate

conjecture is a noun but explicate is not a noun.

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

As verbs, explicate is a hyponym of conjecture; that is, explicate is a word with a more specific, narrower meaning than conjecture:

Other hyponyms of conjecture include construct, reconstruct, retrace, develop, formulate.

conjecture (noun)	explicate (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

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