razorback hog vs swine

razorback hog and swine both are nouns.

Word	Noun	Adjective	Verb	Adverb
razorback hog	Yes	No	No	No
swine	Yes	No	No	No

As nouns, swine is a hypernym of razorback hog; that is, swine is a word with a broader meaning than razorback hog:

razorback hog: a mongrel hog with a thin body and long legs and a ridged back; a wild or semi-wild descendant of improved breeds; found chiefly in the southeastern United States
swine: stout-bodied short-legged omnivorous animals

razorback hog (noun)	swine (noun)
a mongrel hog with a thin body and long legs and a ridged back; a wild or semi-wild descendant of improved breeds; found chiefly in the southeastern United States	stout-bodied short-legged omnivorous animals