* Noun: The end of the story was surprising. (Indicates a point in time or space)
* Verb: The meeting will end at 5 pm. (Indicates a process of coming to a conclusion)
* Adjective: He was at the end of his rope. (Indicates a state of being finished or complete)
* Preposition: From end to end, the street was decorated. (Indicates direction or position)
To determine the part of speech, look at the context in which the word is used.