line double vs line-drive double

line double and line-drive double both are nouns.

Word	Noun	Adjective	Verb	Adverb
line double	Yes	No	No	No
line-drive double	Yes	No	No	No

As nouns, line double and line-drive double are synonyms defined as:

line double (noun)	line-drive double (noun)
a double resulting from a line drive	a double resulting from a line drive