buffer vs random memory

buffer and random memory both are nouns.

Word	Noun	Adjective	Verb	Adverb
buffer	Yes	No	Yes	No
random memory	Yes	No	No	No

buffer (noun)	random memory (noun)
a cushion-like device that reduces shock due to an impact	the most common computer memory which can be used by programs to perform necessary tasks while the computer is on; an integrated circuit memory chip allows information to be stored or accessed in any order and all storage locations are equally accessible
a power tool used to buff surfaces
an inclined metal frame at the front of a locomotive to clear the track
(computer science) a part of RAM used for temporary storage of data that is waiting to be sent to a device; used to compensate for differences in the rate of flow of data between components of a computer system
an implement consisting of soft material mounted on a block; used for polishing (as in manicuring)
a neutral zone between two rival powers that is created in order to diminish the danger of conflict
(chemistry) an ionic compound that resists changes in its pH

buffer (verb)	random memory (verb)
add a buffer (a solution)
protect from impact