An exclamation point is a form of punctuation that emphasizes what comes before it. It can be used to reinforce what one is trying to say or create a sense of urgency.
Essentially interjections and exclamations are the same thing. They are both parts of speech that exemplify some type of sudden emotion. Interjections are typically only a word or two long, while exclamations can be a sentence; basically, an interjection is simply a subcategory of exclamations. Some common interjections/exclamations include alas, oh (dear/boy/my), uh, well, no duh, and so on.
amen
Aha!
Dinner is ready, don't do that, drop your weapon and duck are exclamations. They begin with the letter d.
Zap!
Lookout
OY!
Egads! eureka
Joy! Jeez!
"Jump!" is an exclamation.
excuse me!!!
Exclamations convey strong emotion or emphasis in a sentence, such as surprise, excitement, or urgency. They can help to express feelings more vividly and add intensity to a statement.