hydraulic ram vs hydraulic pump

hydraulic ram and hydraulic pump both are nouns.

Word	Noun	Adjective	Verb	Adverb
hydraulic ram	Yes	No	No	No
hydraulic pump	Yes	No	No	No

As nouns, hydraulic ram and hydraulic pump are synonyms defined as:

hydraulic ram and hydraulic pump: a water pump that uses the kinetic energy of flowing water to force a small fraction of that water to a reservoir at a higher level

hydraulic ram (noun)	hydraulic pump (noun)
a water pump that uses the kinetic energy of flowing water to force a small fraction of that water to a reservoir at a higher level	a water pump that uses the kinetic energy of flowing water to force a small fraction of that water to a reservoir at a higher level