A root word has no prefix or suffix â it's the most basic part of a word. The root word at the heart of conformity, for example, is form.. In linguistics, a root word holds the most basic meaning of any word. It's what's left after you remove all the affixes â the prefixes like un- or anti- and suffixes such as -able and -tion.. With a word like lovely, when you take away the suffix -ly, you're left with the root word love..
Certified Mail provides a record of mailing to the sender and a record of delivery at the Post Office of delivery for two years. Mail pieces requiring a postmarked sender's receipt must be mailed at a USPS office.
The Postal Service does not consider either certified mail service or registered mail service to be classes of mail. They are both add-on services. Certified mail service and registered mail service must be purchased in addition to regular postage for the class of mail that you are sending. You can only add certified mail service or registered mail service to first-class mail, priority mail or first-class package service.