* Adjective: This is the most common usage, describing something that is smaller, weaker, or less important than before.
* Example: "The diminished size of the castle surprised the explorers."
* Verb (past participle): Used to describe something that has been made smaller or less important.
* Example: "The pandemic has diminished global tourism."
* Verb (past tense): This is a less common usage, but it can be used to indicate a decrease.
* Example: "The value of the dollar diminished last year."
To determine the part of speech, look at the context of the sentence and how the word is used.