Q: Sentence (1) A big oil spot spread across the water.
Sentence (2) She liked to spread butter on her toast while it was still hot.. Word: spread.
==--==
A: different meanings

Q: Sentence (1) The soldiers were put on fatigue to teach them a lesson.
Sentence (2) They were assigned to kitchen fatigues.. Word: fatigue.
==--==
A: the same meaning

Q: Sentence (1) He is an avid collector of nineteenth-century postage stamps.
Sentence (2) That old piano is just a big dust collector.. Word: collector.
==--==
A:
the same meaning