hog vs porker

hog and porker both are nouns.

Word	Noun	Adjective	Verb	Adverb
hog	Yes	No	Yes	No
porker	Yes	No	No	No

As nouns, porker is a hyponym of hog; that is, porker is a word with a more specific, narrower meaning than hog:

hog (noun)	porker (noun)
domestic swine	a pig fattened to provide meat
a sheep up to the age of one year; one yet to be sheared
a person regarded as greedy and pig-like

hog (verb)	porker (verb)
take greedily; take more than one's share