* Function words are words that have grammatical functions but don't carry much semantic meaning. They include articles (a, an, the), prepositions (to, from, in), conjunctions (and, but, or), pronouns (I, you, he), and some others.
* Indirect objects are the recipients of the action of a verb. They answer the question "to whom?" or "for whom?"
Example:
* Direct object: I gave the book to my friend. (The book is the direct object, receiving the action of "give")
* Indirect object: I gave my friend the book. (My friend is the indirect object, receiving the book)
Function words cannot be direct or indirect objects because they don't represent things or people.
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