Yes, please read the related link.
You put the article "an" in front of a word (instead of "a") when the word begins with a vowel sound, including some words that start with consonants (hour, honor). Words that begin with a vowel...
wordiize
No, because technically, if someone else writes it, it's not YOUR own words.
adjustable affordable agreeable attachable amendable bailable bendable bendable billable breakable chewable crackable considerable commendable conformable detectable drawable dependable detestable...