studbook vs registry

studbook and registry both are nouns.

Word	Noun	Adjective	Verb	Adverb
studbook	Yes	No	No	No
registry	Yes	No	No	No

As nouns, registry is a hypernym of studbook; that is, registry is a word with a broader meaning than studbook:

studbook: official record of the pedigree of purebred animals especially horses
registry: an official written record of names or events or transactions

Other hypernyms of studbook include register.

studbook (noun)	registry (noun)
official record of the pedigree of purebred animals especially horses	an official written record of names or events or transactions