windscreen wiper vs wiper blade

windscreen wiper and wiper blade both are nouns.

Word	Noun	Adjective	Verb	Adverb
windscreen wiper	Yes	No	No	No
wiper blade	Yes	No	No	No

As nouns, windscreen wiper and wiper blade are synonyms defined as:

windscreen wiper and wiper blade: a mechanical device that cleans the windshield

Other synonyms of windscreen wiper include windshield wiper, wiper.

windscreen wiper (noun)	wiper blade (noun)
a mechanical device that cleans the windshield	a mechanical device that cleans the windshield