hock vs hock-joint

hock and hock-joint both are nouns.

Word	Noun	Adjective	Verb	Adverb
hock	Yes	No	Yes	No
hock-joint	Yes	No	No	No

As nouns, hock and hock-joint are synonyms defined as:

hock and hock-joint: tarsal joint of the hind leg of hoofed mammals; corresponds to the human ankle

hock (noun)	hock-joint (noun)
tarsal joint of the hind leg of hoofed mammals; corresponds to the human ankle	tarsal joint of the hind leg of hoofed mammals; corresponds to the human ankle
any of several white wines from the Rhine River valley in Germany (`hock' is British usage)

hock (verb)	hock-joint (verb)
disable by cutting the hock
leave as a guarantee in return for money