Sec
Part of speech: noun
Definition: Second, 1/60th of a minute. Second, an short indeterminate period of time.
Example sentence: I think what I brought from the private sector was a real appreciation of how much leverage - respect, if you will - that the SEC has. Major companies, in particular, really don't want to be at war with their primary regulator. The SEC may not have appreciated just how great our leverage is.
Secant
Part of speech: noun
Definition: A straight line that intersects a curve at two or more points.In a right triangle, the reciprocal of the cosine of an angle. Symbol: sec