megastar

As nouns the difference between boss and megastar

is that boss is boss (person in charge, supervisor) while megastar is a celebrity originally coined for a very famous or successful celebrity but now routinely used to describe anyone who has public exposure.

As nouns the difference between megastar and star

is that megastar is a celebrity. Originally coined for a very famous or successful celebrity but now routinely used to describe anyone who has public exposure while star is any small luminous dot appearing in the cloudless portion of the night sky, especially with a fixed location relative to other such dots.

As a verb star is

to appear as a featured performer or headliner, especially in an entertainment program.

As a proper noun Star is

{{surname}.

As nouns the difference between taxonomy and megastar

is that taxonomy is the science or the technique used to make a classification while megastar is a celebrity originally coined for a very famous or successful celebrity but now routinely used to describe anyone who has public exposure.