What do we call the shortened form of a word that has an apostrophe in place of missing letters? symbol contraction abbreviation sign

When first i engaged in this work, i resolved to leave neither words nor things unexamined, and myself with a prospect of the hours which i should revel away in feasts of literature . . –preface to a dictionary of the english language, samuel johnson what is the connotation of the word revel in this passage?

How does storytelling imagine the future?

What phrase from "speech after being convicted of voting" most engages the audience's sense of pathos, or their emotions?