mental synthesis vs thought

mental synthesis and thought both are nouns.

Word	Noun	Adjective	Verb	Adverb
mental synthesis	Yes	No	No	No
thought	Yes	No	No	No

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

mental synthesis: the creation of a construct; the process of combining ideas into a congruous object of thought
thought: the process of using your mind to consider something carefully

Other hypernyms of mental synthesis include cerebration, intellection, mentation, thinking, thought process.

mental synthesis (noun)	thought (noun)
the creation of a construct; the process of combining ideas into a congruous object of thought	the process of using your mind to consider something carefully
	the content of cognition; the main thing you are thinking about
	the organized beliefs of a period or group or individual
	a personal belief or judgment that is not founded on proof or certainty