stocker vs domestic animal

stocker and domestic animal both are nouns.

Word	Noun	Adjective	Verb	Adverb
stocker	Yes	No	No	No
domestic animal	Yes	No	No	No

As nouns, domestic animal is a hypernym of stocker; that is, domestic animal is a word with a broader meaning than stocker:

stocker: a domestic animal (especially a young steer or heifer) kept as stock until fattened or matured and suitable for a breeding establishment
domestic animal: any of various animals that have been tamed and made fit for a human environment

Other hypernyms of stocker include domesticated animal.

stocker (noun)	domestic animal (noun)
a domestic animal (especially a young steer or heifer) kept as stock until fattened or matured and suitable for a breeding establishment	any of various animals that have been tamed and made fit for a human environment