ROM vs fixed storage

ROM and fixed storage both are nouns.

Word	Noun	Adjective	Verb	Adverb
ROM	Yes	No	No	No
fixed storage	Yes	No	No	No

As nouns, ROM and fixed storage are synonyms defined as:

ROM and fixed storage: (computer science) memory whose contents can be accessed and read but cannot be changed

Other synonyms of ROM include read-only memory, read-only storage.

ROM (noun)	fixed storage (noun)
(computer science) memory whose contents can be accessed and read but cannot be changed	(computer science) memory whose contents can be accessed and read but cannot be changed