aqualung vs Aqua-Lung

aqualung and Aqua-Lung both are nouns.

Word	Noun	Adjective	Verb	Adverb
aqualung	Yes	No	No	No
Aqua-Lung	Yes	No	No	No

As nouns, aqualung and Aqua-Lung are synonyms defined as:

aqualung and Aqua-Lung: a device (trade name Aqua-Lung) that lets divers breathe under water; scuba is an acronym for self-contained underwater breathing apparatus

Other synonyms of aqualung include scuba.

aqualung (noun)	Aqua-Lung (noun)
a device (trade name Aqua-Lung) that lets divers breathe under water; scuba is an acronym for self-contained underwater breathing apparatus	a device (trade name Aqua-Lung) that lets divers breathe under water; scuba is an acronym for self-contained underwater breathing apparatus