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.
Jocelyn 2014-11-22T21:18:45+00:00. Graduate school lets you apply the knowledge you gained as an undergraduate to a higher level of study, but many students want to know more about the difference between an MA and MS degree. An MA is a Master of Arts, and an MS is a Master of Science. Both degrees generally take around two years to complete on a full-time basis, but there are a number of differences between the degrees, including the classes you take and what you choose to study.