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Circumaural headphones surround the outer ear.
Supra-aural headphones are headphones that sit directly on the ears instead of enveloping them, which is what circumaural headphones do.
Sennheiser HD428 Closed Circumaural Hi-Fi Headphone is best headphone, cheap and best both
'Cushion' can be a noun or a verb:
'She sat on a cushion.'
'Having a good job will cushion you from the worst effects of the recession.'
Yes, the word cushion is a noun and a verb.
Examples:
Here's a cushion for your feet. (noun)
Fortunately, he was wearing padding to cushion the fall. (verb)