ham hock vs leg

ham hock and leg both are nouns.

Word	Noun	Adjective	Verb	Adverb
ham hock	Yes	No	No	No
leg	Yes	No	No	No

As nouns, leg is a hypernym of ham hock; that is, leg is a word with a broader meaning than ham hock:

ham hock (noun)	leg (noun)
a small cut of meat from the leg just above the foot	a section or portion of a journey or course
	(nautical) the distance traveled by a sailing vessel on a single tack
	a cloth covering consisting of the part of a pair of trousers that covers a person's leg
	one of the supports for a piece of furniture
	a prosthesis that replaces a missing leg
	a human limb; commonly used to refer to a whole limb but technically only the part of the limb between the knee and ankle
	a structure in animals that is similar to a human leg and used for locomotion
	the limb of an animal used for food
	a part of a forked or branching shape