storage vs local memory

storage and local memory both are nouns.

Word	Noun	Adjective	Verb	Adverb
storage	Yes	No	No	No
local memory	Yes	No	No	No

As nouns, local memory is a hyponym of storage; that is, local memory is a word with a more specific, narrower meaning than storage:

storage: an electronic memory device
local memory: The memory used by a single CPU or allocated to a single program or function.

storage (noun)	local memory (noun)
the commercial enterprise of storing goods and materials	The memory used by a single CPU or allocated to a single program or function.
the act of storing something
depositing in a warehouse
a depository for goods
an electronic memory device
(computer science) the process of storing information in a computer memory or on a magnetic tape or disk