Noun kernel has 3 senses
  1. kernel, meat - the inner and usually edible part of a seed or grain or nut or fruit stone; "black walnut kernels are difficult to get out of the shell"
    --1 is a kind of plant part, plant structure
    --1 is a part of seed
  2. kernel - a single whole grain of a cereal; "a kernel of corn"
    --2 is a kind of
    grain, caryopsis
    --2 has particulars: corn
  3. kernel, substance, core, center, essence, gist, heart, heart and soul, inwardness, marrow, meat, nub, pith, sum, nitty-gritty - the choicest or most essential or most vital part of some idea or experience; "the gist of the prosecutor's argument"; "the heart and soul of the Republican Party"; "the nub of the story"
    --3 is a kind of content, cognitive content, mental object
    --3 has particulars:
     bare bones; hypostasis; quiddity, haecceity; quintessence; stuff
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