Amazing the new class of "intellectuals" we are getting out there who think an entry in a free encyclopedia, written by anyone who feels like it, is a supporting argument.
Agaricus bisporus, may I recommend something less flavour of the day but more practical in terms of not looking like an idiot: a dictionary. My copy of the Oxford English Dictionary contains the following entry:
hydroplane
- noun 1 a light, fast motor boat. 2 a fin-like attachment which enables a moving submarine to rise or fall in the water. 3 us a seaplane
- verb another term for aquaplane
While I am sure you are far more accurate than the rest of the PPruners here, perhaps one of them might enlighten you on the difference between a noun and a verb.