mentation vs thought

mentation and thought both are nouns.

Word	Noun	Adjective	Verb	Adverb
mentation	Yes	No	No	No
thought	Yes	No	No	No

As nouns, mentation and thought are synonyms defined as:

mentation and thought: the process of using your mind to consider something carefully

Other synonyms of mentation include cerebration, intellection, thinking, thought process.

mentation (noun)	thought (noun)
the process of using your mind to consider something carefully	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