constatation vs supposition

constatation and supposition both are nouns.

Word	Noun	Adjective	Verb	Adverb
constatation	Yes	No	No	No
supposition	Yes	No	No	No

As nouns, supposition is a hypernym of constatation; that is, supposition is a word with a broader meaning than constatation:

Other hypernyms of constatation include assumption, supposal.

constatation (noun)	supposition (noun)
an assumption that is basic to an argument	a hypothesis that is taken for granted
	the cognitive process of supposing
	a message expressing an opinion based on incomplete evidence