Appaloosa vs saddle horse

Appaloosa and saddle horse both are nouns.

Word	Noun	Adjective	Verb	Adverb
Appaloosa	Yes	No	No	No
saddle horse	Yes	No	No	No

As nouns, saddle horse is a hypernym of Appaloosa; that is, saddle horse is a word with a broader meaning than Appaloosa:

Appaloosa: a hardy breed of saddle horse developed in western North America and characteristically having a spotted rump
saddle horse: a lightweight horse kept for riding only

Other hypernyms of Appaloosa include mount, riding horse.

Appaloosa (noun)	saddle horse (noun)
a hardy breed of saddle horse developed in western North America and characteristically having a spotted rump	a lightweight horse kept for riding only