Irregular adverbs: they can be exactly the same as adjectives or completely different.
- Those daily emails are too long. (adj.)
- She writes emails daily. (adv.)
- Good (adj.) -> Well (adv.)
Interjection: expressions of emotion, they can stand alone and are usually capitalized and punctuated.
- Oops. I dropped it. (embarrassment) -> He embarrassedly admits to dropping it.
- Excellent! Thank you! -> He is pleased and grateful to me.
- Argh! -> for frustation
- Wow! -> for surprise