A salutation is a greeting used in a letter or other communication. Salutations can be formal or informal. The most common form of salutation in an English letter includes the recipient's given name or title. For each style of salutation there is an accompanying style of complimentary close, known as valediction. Examples of non-written salutations are bowing (common in Japan), waving, or even addressing somebody by their name. A salutation can be interpreted as a form of a signal in which the receiver of the salutation is being acknowledged, respected or thanked. Another simple but very common example of a salutation is a military salute. By saluting another rank, that person is signalling or showing his or her acknowledgement of the importance or significance of that person and his or her rank. Some greetings are considered vulgar, others "rude" and others "polite". Arabic For formal correspondence, it is common to use: Sa'adat Assayid if the reader is male, and Sa'adat As'Sayyidah if female. It is commonly followed by a full name. For informal correspondence: Al akh if male, and Al okht if female, followed by a first name. For more informal correspondence, Azizi if the reader is male, and Azizati if female. To address a group of people, A'ezza'e for informal correspondence, and in formal correspondence "Sadati" is commonly used and followed by Al A'ezza'a or "Almuhtarameen". To add more formality, it is common to begin the salutation with Ela (to), followed by the salutation and a full name. Example: Azizi Ahmed, Azizati Sarah, A'ezza'e members of the team or Member of the team Al A'ezzaa. Formal : Sa'adat Assayid Ahmed Abdullah, Sa'adat Assayidah Sarah Ibrahim, Sadati members of the team Almuh-tarameen. Common salutation for both formal and informal correspondence : Sa'adat Alostath Ahmed Abdullah, Sa'adat Alostatha Sarah Ibrahim. It is common to conclude the salutation with a Doa such as May god bless him/her or May god protect him/her. This Concluding Doa comes right after the full name of the correspondent. Bengali The salutation "Dear" (প্রিয়) in combination with a name or a title is by far the most commonly used salutation in Bengali, in both formal and informal correspondence. It is commonly followed by either an honorific and a surname, such as "Shrôddheyô" or "Manônīyô" (শ্রদ্ধেয়/মাননীয়), or by a given name, such as "Shrôddheyô/Manônīyô John" (শ্রদ্ধেয়/মাননীয় জন). However, it is not common in Bengali to use both a