astrometry vs uranology

astrometry and uranology both are nouns.

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

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

astrometry: the branch of astronomy that deals with the measurement of the position and motion of celestial bodies
uranology: the branch of physics that studies celestial bodies and the universe as a whole

Other hypernyms of astrometry include astronomy.

astrometry (noun)	uranology (noun)
the branch of astronomy that deals with the measurement of the position and motion of celestial bodies	the branch of physics that studies celestial bodies and the universe as a whole