machine vs buffer

machine and buffer both are nouns.

Word	Noun	Adjective	Verb	Adverb
machine	Yes	No	Yes	No
buffer	Yes	No	Yes	No

machine (noun)	buffer (noun)
any mechanical or electrical device that transmits or modifies energy to perform or assist in the performance of human tasks	a cushion-like device that reduces shock due to an impact
a motor vehicle with four wheels; usually propelled by an internal combustion engine	a power tool used to buff surfaces
a device for overcoming resistance at one point by applying force at some other point	an inclined metal frame at the front of a locomotive to clear the track
a group that controls the activities of a political party	(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 intricate organization that accomplishes its goals efficiently	an implement consisting of soft material mounted on a block; used for polishing (as in manicuring)
an efficient person	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

machine (verb)	buffer (verb)
make by machinery	add a buffer (a solution)
turn, shape, mold, or otherwise finish by machinery	protect from impact