Aqua-Lung vs aqualung

Aqua-Lung and aqualung both are nouns.

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

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

Aqua-Lung and aqualung: 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 Aqua-Lung include scuba.

Aqua-Lung (noun)	aqualung (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