bush vs bushing

bush and bushing both are nouns.

Word	Noun	Adjective	Verb	Adverb
bush	Yes	Yes	Yes	No
bushing	Yes	No	No	No

bush (noun)	bushing (noun)
hair growing in the pubic area	a cylindrical metal lining used to reduce friction
dense vegetation consisting of stunted trees or bushes	an insulating liner in an opening through which conductors pass
a large wilderness area
a low woody perennial plant usually having several major stems

bush (adjective)	bushing (adjective)
not of the highest quality or sophistication

bush (verb)	bushing (verb)
provide with a bushing