The exhibition now at the Dolphin (1600 Liberty, 816-842-4415) may be made up entirely of inanimate objects, but the layers of color, geometric forms and glittering plastic shapes have something to say — possibly to one another. "There is a wonderful dialogue between Shari Mendelson's crafted vessels, made of recycled plastic bottles, and Rachel Hayes' intricately made work, entitled 'Arezzo,' composed of hundreds of pieced-together fabrics and vinyl," gallery associate Emily Eddins says. Discourse Matters also features works by Jason Karolak, Wilbur Niewald and Eric Sall. Eddins says the combination of local and New York artists "expands the conversation regarding contemporary art." The show runs through August 6. Gallery hours are from 9 a.m. to 5 p.m. Tuesday through Friday and from noon to 5 p.m. Saturday. See thedolphingallery.com.