ALT vs angular position

ALT and angular position both are nouns.

Word	Noun	Adjective	Verb	Adverb
ALT	Yes	No	No	No
angular position	Yes	No	No	No

As nouns, angular position is a hypernym of ALT; that is, angular position is a word with a broader meaning than ALT:

ALT: angular distance above the horizon (especially of a celestial object)
angular position: relation by which any position with respect to any other position is established

ALT (noun)	angular position (noun)
angular distance above the horizon (especially of a celestial object)	relation by which any position with respect to any other position is established