curtain airbag vs side curtain airbag

curtain airbag and side curtain airbag both are nouns.

Word	Noun	Adjective	Verb	Adverb
curtain airbag	Yes	No	No	No
side curtain airbag	Yes	No	No	No

As nouns, curtain airbag and side curtain airbag are synonyms defined as:

curtain airbag and side curtain airbag: a safety device installed in cars that deploys by rapidly inflating to protect the head and provide rollover protection.

curtain airbag (noun)	side curtain airbag (noun)
a safety device installed in cars that deploys by rapidly inflating to protect the head and provide rollover protection.	a safety device installed in cars that deploys by rapidly inflating to protect the head and provide rollover protection.