This lecture covers the energy frontier for discoveries of known elementary particles, focusing on bosons and fermions. It delves into the guidance for discoveries of the W and Z bosons, the top quark, and the Higgs boson, including their properties and decays. The lecture also explores the polarization states of bosons, the weak interaction, and the electroweak unification, detailing the SU(2)L symmetry, weak isospin, and weak hypercharge. Additionally, it discusses the Z boson, its decay modes, branching ratios, and the unification of electromagnetic and weak interactions within the standard model.