jumping-off place vs beginning

jumping-off place and beginning both are nouns.

Word	Noun	Adjective	Verb	Adverb
jumping-off place	Yes	No	No	No
beginning	Yes	Yes	No	No

As nouns, beginning is a hypernym of jumping-off place; that is, beginning is a word with a broader meaning than jumping-off place:

jumping-off place: a place from which an enterprise or expedition is launched
beginning: the place where something begins, where it springs into being

Other hypernyms of jumping-off place include origin, root, rootage, source.

jumping-off place (noun)	beginning (noun)
a place from which an enterprise or expedition is launched	the act of starting something
	the first part or section of something
	the event consisting of the start of something
	the place where something begins, where it springs into being
	the time at which something is supposed to begin

jumping-off place (adjective)	beginning (adjective)
	serving to begin