Rick
CA
This is very pedantic, and I'm not sure it would prevent anyone from getting the answer if they were otherwise going to, but: a WAFER in chip manufacturing is a much larger flat slice of silicon, often up to 12" in diameter, onto which many copies of a circuit are etched at the same time. The bit of silicon inside an individual integrated circuit is called a DIE, having been cut out from the wafer and enclosed in a package (usually plastic or metal) to form the chip as a whole.
@Andrzej A "lead role" is a primary character in a movie that a STAR actor might get. "semifinal exam" is not a term I've ever heard used in English - here an exam halfway through a course would usually be called a "midterm exam" or similar. A "semifinal" or "final" could both refer to rounds of a tournament, but only "final" would generally be used on its own to refer to an exam. "bars" can be a sort of archaic / crosswordy way to refer to a musical refrain or melody (think sheet music notation) - so a NATIONAL ANTHEM is a melody or musical snippet that gets played at the Olympics.
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