bubblejet vs bubble jet printer

bubblejet and bubble jet printer both are nouns.

Word	Noun	Adjective	Verb	Adverb
bubblejet	Yes	No	No	No
bubble jet printer	Yes	No	No	No

As nouns, bubblejet and bubble jet printer are synonyms defined as:

Other synonyms of bubblejet include bubble-jet printer.

bubblejet (noun)	bubble jet printer (noun)
a kind of ink-jet printer	a kind of ink-jet printer