read-only storage vs fixed storage

read-only storage and fixed storage both are nouns.

Word	Noun	Adjective	Verb	Adverb
read-only storage	Yes	No	No	No
fixed storage	Yes	No	No	No

As nouns, read-only storage and fixed storage are synonyms defined as:

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

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

read-only storage (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