amaranth

nouns

seed of amaranth plants used as a native cereal in Central and South America
is a type of (narrower)
dry seed-like fruit produced by the cereal grasses: e.g. wheat, barley, Indian corn
any of various plants of the genus Amaranthus having dense plumes of green or red flowers; often cultivated for food
is a member of
large widely distributed genus of chiefly coarse annual herbs
is a type of (narrower)
a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests