roundup vs ranching

roundup and ranching both are nouns.

Word	Noun	Adjective	Verb	Adverb
roundup	Yes	No	No	No
ranching	Yes	No	No	No

As nouns, ranching is a hypernym of roundup; that is, ranching is a word with a broader meaning than roundup:

roundup: the activity of gathering livestock together so that they can be counted or branded or sold
ranching: farming for the raising of livestock (particularly cattle)

roundup (noun)	ranching (noun)
the systematic gathering up of suspects by the police	farming for the raising of livestock (particularly cattle)
the activity of gathering livestock together so that they can be counted or branded or sold
a summary list; as in e.g. "a news roundup"