  In this paper, nonzero component graphs and nonzero component union graphs of
finite dimensional vector space are studied using the zero-divisor graph of
specially constructed 0-1-distributive lattice and the zero-divisor graph of
rings. Further, we define an equivalence relation on nonzero component graphs
and nonzero component union graphs to deduce that these graphs are the graph
join of zero-divisor graphs of Boolean algebras and complete graphs. In the
last section, we characterize the perfect and chordal nonzero component graphs
and nonzero component union graphs.
