'SCUBA' is a noun, referring to the breathing apparatus. 'SCUBA dive' is the verb, with 'SCUBA dived' as the past-tense form.
Buceo is a conjugation of the original verb "bucear" which means "to scuba dive." By dropping the -ar and adding the -o, the word it being changed to "I scuba dive."
el buceo (sport); bucear (verb) This is also snorkeling.
Either, depending on context. Usually, if used as a noun it is SCUBA; as an adjective, as in scuba diver, it is just scuba.
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Scuba diving.
A scuba diver is a human who enjoys scuba diving. Therefore, a scuba diver has a spine and is a vertebrate.
It's an acronym: Self-Contained Underwater Breathing Apparatus = SCUBA (not scuba)
Scuba was invented by the navy.
There are scuba diving classes and popular scuba diving areas in Sydney, Australia. Scuba diving clubs are not advertised in that area.
scuba diving
An acronym is a string of letters standing for the words in a phrase. So no - SCUBA was not a word before it was an acronym. As an acronym SCUBA (Self Contained Underwater Breathing Apparatus) has entered the language and now can stand on its own as a noun -- an aqualung or a verb - scubaed and scubaing, an adjective - the scuba industry. So no an acronym doesn't have to be a word, and just because some become words doesn't mean they should. HAND.