Best Answer: A certified letter is sent by a person or a business when they want to mail important information and be sure that it was received. It's not usually a good thing. Collection agencies send them, people involved in legal cases send them, etc... certified letter is one where the post office ensures that the letter is only delivered to the person it was addressed to, and records his signature.
For other uses, see MS. A Master of Science degree (Latin: Magister Scientiae; abbreviated MS, MSc, MSci, ScM or SciM with or without punctuation) is a type of master's degree awarded by universities in many countries. The degree is usually contrasted with the Master of Arts degree.
Ms or Ms. (normally /ËmÉªz/, but also /mÉz/, or /mÉs/ when unstressed) is an English honorific used with the last name or full name of a woman, intended as a default form of address for women regardless of their marital status. Like Miss and Mrs., the term Ms. has its origins in the female English title once used for all women, Mistress. It has its origin in the 17th century and was revived into mainstream usage in the 20th century.