Hash is the trichomes from the bud of the marijuana plant pressed. Can be from squishy to hard like a brick. It's a purer THC product, because it takes what gets you high from the plant, without the plant material. That is, of course, unless you live in an area where soapbar is common, then you never know what you're getting. Hash is almost never commercially available in most parts of the states.
I like weed more than hash, the high is more psychedelic. But then again weed is really hard to come by over here, whereas hash is everywhere..
i think skunk is more psychedelic but you can't beat the pulsing feeling in your head that hash produces, it's feeling of mild intoxication when you smoke enough. love it.