plinth: plinth: 1. A block or slab on which a pedestal, column, or statue is placed.
2. The base block at the intersection of the baseboard and the vertical trim around an opening.
3. A continuous course of stones supporting a wall. Also called plinth course.
4. A square base, as for a vase. American Heritage Dictionary
404: 404: Someone who's clueless. From the World Wide Web error message "404 Not Found," meaning that the requested document could not be located. "Don't bother asking him ... he's 404, man." Shameem's Blog