uranology vs natural philosophy

uranology and natural philosophy both are nouns.

Word	Noun	Adjective	Verb	Adverb
uranology	Yes	No	No	No
natural philosophy	Yes	No	No	No

As nouns, natural philosophy is a hypernym of uranology; that is, natural philosophy is a word with a broader meaning than uranology:

uranology: the branch of physics that studies celestial bodies and the universe as a whole
natural philosophy: the science of matter and energy and their interactions

Other hypernyms of uranology include physics.

uranology (noun)	natural philosophy (noun)
the branch of physics that studies celestial bodies and the universe as a whole	the science of matter and energy and their interactions