Question: Here is one sentence: They had a window of less than an hour when an attack would have succeeded.
Here is another sentence: You have a two-hour window of clear weather to finish working on the lawn.
Does the window mean the same thing in the two sentences?

Answer: the same meaning

Question: Here is one sentence: We went there by foot because we could not afford a taxi.
Here is another sentence: The foot of the list.
Does the foot mean the same thing in the two sentences?

Answer: different meanings

Question: Here is one sentence: Check into the rumor.
Here is another sentence: Check the brakes.
Does the check mean the same thing in the two sentences?

Answer: different meanings

Question: Here is one sentence: A notice of sale.
Here is another sentence: An obituary notice.
Does the notice mean the same thing in the two sentences?

Answer:
the same meaning