1. He took the watch apart.

2. He disassembled the watch.
3. He broke up the watch.
(Are the three the same?)

4. He put the watch together.
5. He assembled the watch.
6. He fabricated the watch.
(Do the three have the same meaning?)

1 and 2 are the same; 3 means he destroyed it (and it won't ever work again).

4 and 5 are the same; 6 is slightly different, implying something done in a factory.
http://www.answers.com/fabricate

1. "He took the watch apart." means that he separated the different components or pieces of the watch, possibly with the intention of inspecting or repairing it.

2. "He disassembled the watch." has the same meaning as the previous sentence. It means that he intentionally took the watch apart, perhaps to examine it closely or fix any issues.

3. "He broke up the watch." has a slightly different meaning. While it could imply the act of taking the watch apart, it also suggests a more forceful or destructive action. It implies that the watch was intentionally or unintentionally damaged or destroyed.

Therefore, although the first two sentences convey the same idea, the third sentence has a slightly different meaning, emphasizing the destructive nature of the action.

4. "He put the watch together." means that he reassembled the different components or pieces of the watch after taking it apart. This phrase implies that he successfully reassembled the watch into its original working condition.

5. "He assembled the watch." has the same meaning as the previous sentence. It suggests that he put the different parts or components together to create a functioning watch.

6. "He fabricated the watch." has a different meaning. While it includes assembling the watch, it also implies that he created or constructed the watch entirely from scratch, possibly using raw materials or parts. It suggests a more involved process of creating the watch rather than just putting existing pieces together.

Therefore, while the first two sentences convey the same idea, the third sentence has a different connotation, and the last three sentences have slightly different meanings, emphasizing the process of putting parts together or creating something from scratch.