Question: Here is one sentence: A bit of lint.
Here is another sentence: The horse was not accustomed to a bit.
Does the bit mean the same thing in the two sentences?

Answer: different meanings

Question: Here is one sentence: I will work hard to improve my grades.
Here is another sentence: They worked on the task.
Does the work mean the same thing in the two sentences?

Answer: the same meaning

Question: Here is one sentence: The sauce should reduce to one cup.
Here is another sentence: The cells reduce.
Does the reduce mean the same thing in the two sentences?

Answer: different meanings

Question: Here is one sentence: I spent my spring holidays in Morocco.
Here is another sentence: He will hold office until the spring of next year.
Does the spring mean the same thing in the two sentences?

Answer:
the same meaning