Tangible.

tan‧gi‧ble  /ˈtændʒəbəl/ Pronunciation Key - Show Spelled Pronunciation[tan-juh-buhl] Pronunciation Key - Show IPA Pronunciation

–adjective
1. capable of being touched; discernible by the touch; material or substantial.
2. real or actual, rather than imaginary or visionary: the tangible benefits of sunshine.
3. definite; not vague or elusive: no tangible grounds for suspicion.
4. (of an asset) having actual physical existence, as real estate or chattels, and therefore capable of being assigned a value in monetary terms.

–noun
5. something tangible, esp. a tangible asset.

So, it seems that something that is 'tangible' is something that really exists, something that you can touch something that is not suspicious, something that has physical existence. This whole idea of something that is 'real' isn't actually as simple as it may seem. Because how are you proving that that thing is 'real', as opposed to imaginery, or fictional?
If you say all that is real is able to be touched, what about emotions... you can't touch jealousy or happiness or fear... but if you were experiencing any of those things you certainly would say it was real.
What about saying that something is real if it seems logical... but when a bumble bee flies around it seems to defy all laws of physics in actually taking off from the ground, but you wouln't say it wasn't real.
Maybe something is real if you can see it, we often say we don't believe things unless we see them with our own eyes... but when someone tells you about something that's happened in their day, you tend to believe them. Of course unless they say something like they'd been eaten alive by a savage wolf...

I know this isn't rocket science and I can't even remember the fancy-pants terms for all the different kinds of proof etc. My point is simply just that 'real' is actually a difficult concept to define, and I know that I often dismiss things as not being real... things that people tell me, feelings that I have... maybe it sometines is worth thinking quite carefully about what real is, and what is real to us by whatever definition we want to use. It seems to me that though it's a pretty difficult thing to pin down, it's also a pretty important thing to get to grips with!

nb. Tim said I should write this blog on 'tangible' so appologies for whatever you make of what I came out with!