pig out vs eat

pig out and eat both are verbs.

Word	Noun	Adjective	Verb	Adverb
pig out	No	No	Yes	No
eat	No	No	Yes	No

As verbs, eat is a hypernym of pig out; that is, eat is a word with a broader meaning than pig out:

pig out (verb)	eat (verb)
overeat or eat immodestly; make a pig of oneself	cause to deteriorate due to the action of water, air, or an acid
	take in solid food
	eat a meal; take a meal
	take in food; used of animals only
	use up (resources or materials)
	worry or cause anxiety in a persistent way