sick bag vs sickbag

sick bag and sickbag both are nouns.

Word	Noun	Adjective	Verb	Adverb
sick bag	Yes	No	No	No
sickbag	Yes	No	No	No

As nouns, sick bag and sickbag are synonyms defined as:

sick bag and sickbag: a bag provided on an airplane for passengers who are suffering from airsickness and need to vomit

sick bag (noun)	sickbag (noun)
a bag provided on an airplane for passengers who are suffering from airsickness and need to vomit	a bag provided on an airplane for passengers who are suffering from airsickness and need to vomit