Fusion/Fission
Minor detail: fission adds a particle to an atom that makes it unstable and causes it to split into two or more smaller atoms (e.g. U235 + neutron ==> U236* (*=excess energy) ==>fissions Kr90 + Cs139 + 2.4 neutrons). Fusion takes two smaller atoms and makes at least one larger atom, but often a smaller particle comes out too (e.g. H2 + H3 ==> He4 + n) . For p-B11, it is H1 + B11 ==> C12* ==> Be8* + He4 ==> 3He4, so B11 is like U235 and C12* is like U236*, and 3He4's are all smaller than the original B11. The reasons this tends to be called fusion is that you need a fusion like reactor to get the two charged particles together (like fusion), and there is no self-sustaining reactions from excess neutrons, like most fission reactions. There might even be some desire to keep p-B11 separate from fission because of the bad connotation of fission as dangerous, and fusion as clean.
