Lipizzan vs riding horse

Lipizzan and riding horse both are nouns.

Word	Noun	Adjective	Verb	Adverb
Lipizzan	Yes	No	No	No
riding horse	Yes	No	No	No

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

Lipizzan: a compact and sturdy saddle horse that is bred and trained in Vienna; smart and docile and excellent for dressage
riding horse: a lightweight horse kept for riding only

Other hypernyms of Lipizzan include mount, saddle horse.

Lipizzan (noun)	riding horse (noun)
a compact and sturdy saddle horse that is bred and trained in Vienna; smart and docile and excellent for dressage	a lightweight horse kept for riding only