Ryandor.com

nub (nŭb)
n.

1. A protuberance or knob.
2. A small lump.
3. The essence; the core: the nub of a story.

es?sence (ĕs'əns)
n.

1. The intrinsic or indispensable properties that serve to characterize or identify something.
2. The most important ingredient; the crucial element.
3. The inherent, unchanging nature of a thing or class of things.
4. An extract that has the fundamental properties of a substance in concentrated form.
5. One that has or shows an abundance of a quality as if highly concentrated: a neighbor who is the essence of hospitality.
6. Something that exists, especially a spiritual or incorporeal entity.

well that responce was good, but i would have settled for a "stfu noob"