scientific fact vs observation

scientific fact and observation both are nouns.

Word	Noun	Adjective	Verb	Adverb
scientific fact	Yes	No	No	No
observation	Yes	No	No	No

As nouns, observation is a hypernym of scientific fact; that is, observation is a word with a broader meaning than scientific fact:

scientific fact: an observation that has been confirmed repeatedly and is accepted as true (although its truth is never final)
observation: facts learned by observing

scientific fact (noun)	observation (noun)
an observation that has been confirmed repeatedly and is accepted as true (although its truth is never final)	the act of observing; taking a patient look
	the act of making and recording a measurement
	the act of noticing or paying attention
	facts learned by observing
	a remark expressing careful consideration