This article presents a theoretical discussion of the most accepted forms of social capital in the literature: bonding, bridging, and linking. It studies the relationship between the forms of social capital and Granovetter's strength of weak ties thesis, the principle of homo-heterophilia and Lin's status attainment theory. In addition, an extension of the theoretical model of the forms of social capital is proposed. Considering the relationship between the strength of the tie and the position that the individual occupies in the social structure results in considering not only the hierarchical weak ties (linking), but also the hierarchical strong ties (or hierarchical bonding).