furring strip vs furring

furring strip and furring both are nouns.

Word	Noun	Adjective	Verb	Adverb
furring strip	Yes	No	No	No
furring	Yes	No	No	No

As nouns, furring strip and furring are synonyms defined as:

furring strip and furring: strip used to give a level surface for attaching wallboard

furring strip (noun)	furring (noun)
strip used to give a level surface for attaching wallboard	strip used to give a level surface for attaching wallboard
	a furlike coating of matter as on the tongue