scope vs ballpark

scope and ballpark both are nouns.

Word	Noun	Adjective	Verb	Adverb
scope	Yes	No	No	No
ballpark	Yes	No	No	No

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

scope (noun)	ballpark (noun)
electronic equipment that provides visual images of varying electrical quantities	a facility in which ball games are played (especially baseball games)
a magnifier of images of distant objects	near to the scope or range of something
an area in which something acts or operates or has power or control:
the state of the environment in which a situation exists