* Adjective: Describing something that happens every day. Example: "She has a daily routine."
* Adverb: Modifying a verb, adjective, or another adverb to indicate frequency. Example: "He exercises daily."
* Noun: Meaning "a newspaper that is published every day." Example: "She bought a daily at the newsstand."
Let me know if you have a specific sentence in mind and I can tell you which part of speech "daily" is acting as in that sentence!