Question: Here is one sentence: The part of his hair was slightly to the left.
Here is another sentence: His part was right in the middle.
Does the part mean the same thing in the two sentences?

Answer: the same meaning

Question: Here is one sentence: The mayor likes to call on some of the prominent citizens.
Here is another sentence: She called her children lazy and ungrateful.
Does the call 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: He lived a long and happy life.
Does the life mean the same thing in the two sentences?

Answer: different meanings

Question: Here is one sentence: There is a narrow line between sanity and insanity.
Here is another sentence: Toe the line.
Does the line mean the same thing in the two sentences?

Answer:
different meanings