place of origin vs rootage

place of origin and rootage both are nouns.

Word	Noun	Adjective	Verb	Adverb
place of origin	Yes	No	No	No
rootage	Yes	No	No	No

As nouns, rootage is a hypernym of place of origin; that is, rootage is a word with a broader meaning than place of origin:

place of origin: where something originated or was nurtured in its early existence
rootage: the place where something begins, where it springs into being

Other hypernyms of place of origin include beginning, origin, root, source.

place of origin (noun)	rootage (noun)
where something originated or was nurtured in its early existence	the place where something begins, where it springs into being
	a developed system of roots
	fixedness by or as if by roots