base:; foundation: something from which other things extend. / base:; a basic but essential component or ingredient. / base:; basis: the starting point of a logical deduction or though. / base:; a morpheme (or morphemes) that serves as a basic foundation on which affixes can be attached. / foundation:; groundwork, basis: That upon which anything is founded; that on which anything stands, and by which it is supported; the lowest and supporting layer of a superstructure; underbuilding. / foundation:; The lowest and supporting part or member of a wall, including the base course and footing courses; in a frame house, the whole substructure of masonry. / basis:; a physical base or foundation. / basis:; a starting point, base or foundation for an argument or hypothesis. / principle (morals) / background / floor