Question: Here is one sentence: His display of foulness deserved severe punishment.
Here is another sentence: Mouths which speak such foulness must be cleansed.
Does the foulness mean the same thing in the two sentences?

Answer: the same meaning

Question: Here is one sentence: Chief of Staff is the second highest position in the army.
Here is another sentence: The position of the hands on the clock.
Does the position mean the same thing in the two sentences?

Answer: different meanings

Question: Here is one sentence: This nest egg will ensure a nice retirement for us.
Here is another sentence: The circumstances ensured that he would arrive in time.
Does the ensure mean the same thing in the two sentences?

Answer: the same meaning

Question: Here is one sentence: Use your head!
Here is another sentence: She used to call her mother every week but now she calls only occasionally.
Does the use mean the same thing in the two sentences?

Answer:
different meanings