Interjections:

Interjections are words or phrases that are used to express emotion or add emphasis to a sentence.

They are typically used in spoken language and can convey feelings such as surprise, excitement, anger, or agreement.

Examples of interjections include "wow," "oh my goodness," "Ouch," "Yikes," and "Phew." Interjections are used to give voice to our emotions and reactions in a quick and immediate way.