Question: Here is one sentence: I wanted to create an impression of success.
Here is another sentence: He watched the impression of the seal on the hot wax.
Does the impression mean the same thing in the two sentences?

Answer: different meanings

Question: Here is one sentence: A reduction in the assessment per head of sheep.
Here is another sentence: At five years of age this head of cattle is worth perhaps $40.
Does the head mean the same thing in the two sentences?

Answer: the same meaning

Question: Here is one sentence: Don't scratch your insect bites!
Here is another sentence: The lovers scratched their names into the bark of the tree.
Does the scratch mean the same thing in the two sentences?

Answer: different meanings

Question: Here is one sentence: Toe the line.
Here is another sentence: Historians can only point out those lines for which evidence is available.
Does the line mean the same thing in the two sentences?

Answer:
different meanings