weatherstripping vs weather strip

weatherstripping and weather strip both are nouns.

Word	Noun	Adjective	Verb	Adverb
weatherstripping	Yes	No	No	No
weather strip	Yes	No	No	No

As nouns, weatherstripping and weather strip are synonyms defined as:

weatherstripping and weather strip: a narrow strip of material to cover the joint of a door or window to exclude the cold

Other synonyms of weatherstripping include weather stripping, weatherstrip.

weatherstripping (noun)	weather strip (noun)
a narrow strip of material to cover the joint of a door or window to exclude the cold	a narrow strip of material to cover the joint of a door or window to exclude the cold