Synonyms to gray matter

bean, Irish potato, Kraut, a continental, a curse, a damn, a darn, a hoot, algae, aubergine, autophyte, bagatelle, bauble, beans, belfry, bibelot, bit, bracken, brain, brass farthing, brow, brown algae, button, cabbage, cent, climber, conferva, confervoid, conk, creeper, crown, curio, diatom, dome, eggplant, encephalon, farce, farthing, feather, fern, fig, fleabite, folderol, fribble, frippery, fruits and vegetables, fucus, fungus, gaud, gewgaw, gimcrack, grapevine, green algae, greens, gulfweed, hair, halfpenny, head, headpiece, herb, heterophyte, hill of beans, ivy, jest, joke, kelp, kickshaw, knickknack, knickknackery, legume, legumes, lentil, liana, lichen, liverwort, love apple, mad apple, minikin, mockery, mold, molehill, moss, mushroom, noddle, noggin, noodle, organ of thought, parasite, parasitic plant, pate, pea, peppercorn, perthophyte, phytoplankton, picayune, pieplant, pin, pinch of snuff, pinprick, planktonic algae, plant families, poll, potato, potherbs, produce, puffball, pulse, rap, red algae, red cent, rhubarb, ridge, rockweed, row of pins, rush, rust, saprophyte, sargasso, sargassum, sconce, sea l