force-feed lubricating system vs pressure feed

force-feed lubricating system and pressure feed both are nouns.

Word	Noun	Adjective	Verb	Adverb
force-feed lubricating system	Yes	No	No	No
pressure feed	Yes	No	No	No

As nouns, force-feed lubricating system and pressure feed are synonyms defined as:

force-feed lubricating system and pressure feed: mechanical system of lubricating internal combustion engines in which a pump forces oil into the engine bearings

Other synonyms of force-feed lubricating system include force feed, lubricating system, pressure-feed lubricating system.

force-feed lubricating system (noun)	pressure feed (noun)
mechanical system of lubricating internal combustion engines in which a pump forces oil into the engine bearings	mechanical system of lubricating internal combustion engines in which a pump forces oil into the engine bearings