Observation of B{sup +}{yields}{eta}{rho}{sup +} and search for B{sup 0} decays to {eta}'{eta}, {eta}{pi}{sup 0}, {eta}'{pi}{sup 0}, and {omega}{pi}{sup 0}

We present measurements of branching fractions for five B-meson decays to two-body charmless final states. The data, collected with the BABAR detector at the Stanford Linear Accelerator Center, represent 459x10{sup 6} BB pairs. The results for branching fractions are, in units of 10{sup -6} (upper limits at 90% C.L.), B(B{sup +}{yields}{eta}{rho}{sup +})=9.9{+-}1.2{+-}0.8, B(B{sup 0}{yields}{eta}{sup '}{eta})=0.5{+-}0.4{+-}0.1(<1.2), B(B{sup 0}{yields}{eta}{pi}{sup 0})=0.9{+-}0.4{+-}0.1(<1.5), B(B{sup 0}{yields}{eta}{sup '}{pi}{sup 0})=0.9{+-}0.4{+-}0.1(<1.5), and B(B{sup 0}{yields}{omega}{pi}{sup 0})=0.07{+-}0.26{+-}0.02(<0.5). The first error quoted is statistical and the second systematic. For the {eta}{rho}{sup +} mode, we measure the charge asymmetry A{sub ch}(B{sup +}{yields}{eta}{rho}{sup +})=0.13{+-}0.11{+-}0.02.