- beach plum, beach plum bush, Prunus maritima - seacoast shrub of northeastern North America having showy white blossoms and edible purple fruit
--1 is a kind of wild plum, wild plum tree
--1 has parts: beach plum - beach plum - small dark purple fruit used especially in jams and pies
--2 is a kind of plum
--2 is a part of beach plum, beach plum bush, Prunus maritima