figment vs thought

figment and thought both are nouns.

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

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

Other hypernyms of figment include idea.

figment (noun)	thought (noun)
a contrived or fantastic idea	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