Hello all, new here. I am a lawyer, I don’t specialise in criminal law but I have studied it for many years etc so I can hopefully shed some light on what isn’t quite so obvious.
For burglary, trespass is part of what we call the conduct element of the crime - the actus reus. Trespass must always be proven in a charge of burglary (among other elements, but I won’t go there now). Trespass takes on a different legal meaning, where breaking and entering (by force per say) is not part and parcel to trespassing. Trespassing is simply entering land which you don’t have permission to be on, if that makes sense. So in a nutshell, trespass will always be proven for a charge of burglary, but breaking in by force need not be. It will likely be a sentencing factor though.