astrodynamics vs uranology

astrodynamics and uranology both are nouns.

Word	Noun	Adjective	Verb	Adverb
astrodynamics	Yes	No	No	No
uranology	Yes	No	No	No

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

astrodynamics: the branch of astronomy that studies the motion of natural and artificial bodies in space
uranology: the branch of physics that studies celestial bodies and the universe as a whole

Other hypernyms of astrodynamics include astronomy.

astrodynamics (noun)	uranology (noun)
the branch of astronomy that studies the motion of natural and artificial bodies in space	the branch of physics that studies celestial bodies and the universe as a whole