* Verb: "I set the alarm clock." (Action word)
* Noun: "The sun is part of the solar set." (Thing)
* Adjective: "We have a set of rules to follow." (Describes the noun "rules")
* Preposition: "I put the book set aside." (Shows relationship between the book and the action)
To determine the part of speech, you need to look at how it is used in a sentence.