conjecture vs abstract thought

conjecture and abstract thought both are nouns.

Word	Noun	Adjective	Verb	Adverb
conjecture	Yes	No	Yes	No
abstract thought	Yes	No	No	No

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

conjecture: reasoning that involves the formation of conclusions from incomplete evidence
abstract thought: thinking that is coherent and logical

Other hypernyms of conjecture include logical thinking, reasoning.

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

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