horoscopy vs star divination

horoscopy and star divination both are nouns.

Word	Noun	Adjective	Verb	Adverb
horoscopy	Yes	No	No	No
star divination	Yes	No	No	No

As nouns, star divination is a hypernym of horoscopy; that is, star divination is a word with a broader meaning than horoscopy:

horoscopy: the drawing up and interpretation of horoscopes
star divination: a pseudoscience claiming divination by the positions of the planets and sun and moon

Other hypernyms of horoscopy include astrology.

horoscopy (noun)	star divination (noun)
the drawing up and interpretation of horoscopes	a pseudoscience claiming divination by the positions of the planets and sun and moon