Question: Here is one sentence: I ordered two dozen doughnuts.
Here is another sentence: There shouldn't be more than two dozen Christmas cards left to write.
Does the dozen mean the same thing in the two sentences?

Answer: the same meaning

Question: Here is one sentence: The labor movement has been struggling in America since the passage of the Taft-Hartley act in 1947.
Here is another sentence: He was a charter member of the movement.
Does the movement mean the same thing in the two sentences?

Answer: the same meaning

Question: Here is one sentence: What did you get at the toy store?
Here is another sentence: She didn't get his name when they met the first time.
Does the get mean the same thing in the two sentences?

Answer: different meanings

Question: Here is one sentence: He could no longer cope with the complexities of life.
Here is another sentence: Get a life.
Does the life mean the same thing in the two sentences?

Answer:
different meanings