The difference between them is just spin. But in this context, spin is a quantum number of angular momentum. It is a bit like the particle is spinning, but that is really just an analogy, since point-like fundamental particles could not spin, and anyway fermions have a spin such that in a classical analogy they would have to go round twice to get back where they started. Quantum mechanics is full of semi-misleading analogies like this.
Regardless, spin is important.
Bosons have, by definition, integer spin. The Higgs has zero, the gluon, photon, W and Z all have one, and the graviton is postulated to have two units of spin. Quarks, electrons and neutrinos are fermions, and all have a half unit of spin.
There! You are now ready to work on a QFT problem! :)
All kidding aside, sometime it is handy to have a simple, laymen-level explanation. One would hope that this will lead to more questions and more attempts at understanding.
Zz.
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