function and functionality
经常看到这两个词,貌似它们的含义是一样的,其实不然。区别起来很简单,function是功能,即一件东西是用来做什么的,比如说,一座桥的功能就是:The bridge serves the function of allowing cars and trucks to cross the river. 但功能发挥得如何,就要涉及到functionality了,比如说这座桥年久失修,那么,The functionality of the bridge has diminished greatly. Functionality的近义词包括usability, workability, handiness等。