buffer vs engine

buffer and engine both are nouns.

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

buffer (noun)	engine (noun)
a cushion-like device that reduces shock due to an impact	motor that converts thermal energy to mechanical work
a power tool used to buff surfaces	a wheeled vehicle consisting of a self-propelled engine that is used to draw trains along railway tracks
an inclined metal frame at the front of a locomotive to clear the track	an instrument or machine that is used in warfare, such as a battering ram, catapult, artillery piece, etc.
(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	something used to achieve a purpose
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)	engine (verb)
add a buffer (a solution)
protect from impact