Veg·e·ta·ble: Spelled [vej-tuh-buhl, vej-i-tuh-] noun
Any plant whose fruit, seeds, roots, tubers, bulbs, stems, leaves, or flower parts are used as food, as the tomato, bean, beet, potato, onion, asparagus, spinach, or cauliflower.

Seed: [seed] noun
The fertilized, matured ovule of a flowering plant, containing an embryo or rudimentary plant, any propagative part of a plant, including tubers, bulbs, etc., especially as preserved for growing a new crop.

Pas·ture: Spelled [pas-cher, pahs-] noun, verb
An area covered with grass or other plants used or suitable for the grazing of livestock; grassland.