ГРИБ _|_ MUSHROOM / GRIB [ɡrʲip]           

Hint with an alternative definition: they are like fungi «ribs», think about a big agaric (mushroom in a «grey robe» with red dots) on ground, a green grass or herbs near a birch or any tree, mushrooms grow rapidly in a big group (just like grapes), you can grub them & grab (for soup) but be aware – it can be both cibarious and poison-bearing (eating of greeby mushrooms is going to R.I.P.)

Mental visualization: гР (mushroom and worm) + ИБ (mushroom picker with a basket)