weather strip vs weatherstrip

weather strip and weatherstrip both are nouns.

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

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

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

Other synonyms of weather strip include weather stripping, weatherstripping.

weather strip (noun)	weatherstrip (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

weather strip (verb)	weatherstrip (verb)
	provide with weatherstripping