olive: one-seeded fruit of the European olive tree usually pickled and used as a relish
drupe: fleshy indehiscent fruit with a single seed: e.g. almond; peach; plum; cherry; elderberry; olive; jujube
lemon balm: bushy perennial Old World mint having small white or yellowish flowers and fragrant lemon-flavored leaves; a garden escapee in northern Europe and North America