As nouns,
disk cache is a hyponym of
memory cache; that is,
disk cache is a
word with a more specific, narrower meaning than
memory cache:
- memory cache: (computer science) RAM memory that is set aside as a specialized buffer storage that is continually updated; used to optimize data transfers between system elements with different characteristics
- disk cache: a cache that stores copies of frequently used disk sectors in random access memory (RAM) so they can be read without accessing the slower disk