sickbag vs sick bag

sickbag and sick bag both are nouns.

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

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

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

sickbag (noun)	sick bag (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