conjecture vs hypothesis

conjecture and hypothesis both are nouns.

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

As nouns, hypothesis is a hypernym of conjecture; that is, hypothesis is a word with a broader meaning than conjecture:

conjecture: a hypothesis that has been formed by speculating or conjecturing (usually with little hard evidence)
hypothesis: a tentative insight into the natural world; a concept that is not yet verified but that if true would explain certain facts or phenomena

Other hypernyms of conjecture include possibility, theory.

As nouns, conjecture and hypothesis are synonyms defined as:

conjecture and hypothesis: a message expressing an opinion based on incomplete evidence

Other synonyms of conjecture include guess, speculation, supposition, surmisal, surmise.

conjecture (noun)	hypothesis (noun)
a hypothesis that has been formed by speculating or conjecturing (usually with little hard evidence)	a tentative insight into the natural world; a concept that is not yet verified but that if true would explain certain facts or phenomena
reasoning that involves the formation of conclusions from incomplete evidence	a proposal intended to explain certain facts or observations
a message expressing an opinion based on incomplete evidence	a message expressing an opinion based on incomplete evidence

conjecture (verb)	hypothesis (verb)
to believe especially on uncertain or tentative grounds