mental synthesis vs thinking

mental synthesis and thinking both are nouns.

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

As nouns, thinking is a hypernym of mental synthesis; that is, thinking 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
thinking: the process of using your mind to consider something carefully

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

mental synthesis (noun)	thinking (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

mental synthesis (adjective)	thinking (adjective)
	endowed with the capacity to reason