Don't worry so much about the distinction between the two - the
test will not be on which is which. If you get a question on this, it will probably be of the nature of "which of the following are
Java keywords" and then lists some choices, all of which should be obvious if you have done some study. Remember that keywords are all lower case ONLY! Thus you might get a choice like "TRUE", but you almost definitely won't get an option of "true". And most of all, don't panic! The test isn't too hard if you did your homework!