base basic basis 这三个词怎么区分呢？

base， basis， basic,foundation， ground， groundwork
These nouns all pertain to what underlies and supports.
这些名词都与基础与支撑物有关。
Base is applied chiefly to material objects:
Base 主要指物体基础：
amazed by the size of the monument's base.
惊讶于纪念碑基部的巨大。
Basis is used in a nonphysical sense:
Basis 用来指非物质方面的基础：
“The basis of a democratic state is liberty” (Aristotle).
“民主国家的基础是自由” （亚里士多德）。
basic, n.（名词）
An essential, fundamental element or entity:
基本要素，基础本质：
the basics of math.
数学基础
Basic training.
基本训练
Foundation applies physically (the foundation of a house) and figuratively (a statement without foundation in fact) . It often stresses firmness of support for something of relative magnitude:
Foundation 指物质基础如：（房基） 及用作比喻：（没有事实基础的声明） 。 它经常被用来强调相关数量事物基础的稳固和坚固：
“Our flagrant disregard for the law attacks the foundation of this society” (Peter D. Relic).
“我们明显地忽视法律对这个社会的基础是一种攻击”