disc space vs swap file

disc space and swap file both are nouns.

Word	Noun	Adjective	Verb	Adverb
disc space	Yes	No	No	No
swap file	Yes	No	No	No

As nouns, swap file is a hyponym of disc space; that is, swap file is a word with a more specific, narrower meaning than disc space:

Other hyponyms of disc space include disk overhead, overhead, swap space.

disc space (noun)	swap file (noun)
(computer science) the space available on a magnetic disk	the disk space that is set aside for virtual memory