As a noun, it means signature and your Excellency.

1. Proper nouns;

A proper name that represents a specific person, thing, place, group or institution (the first letter should be capitalized). Example: China (China), Asia (Asia), Beijing (Beijing).

If a proper noun contains a noun phrase, the definite article the must be used. Such as: theGreatWall (Great Wall).

If the surname is in plural form, it means that the surname belongs to a family (plural meaning). Such as: theGreens (Green family).

2. Common nouns;

The names that represent certain people, certain types of things, certain substances or abstract concepts. For example: teacher, tea, reform.

Common nouns can be further divided into five categories:

(1) Individual nouns (IndividualNouns): Indicate individual people and things. Such as car (car), room (room), fan (fan), photo (photo);

(2) Collective nouns (Collective Nouns): the name of a group of people or things. Such as people (people), family (family), army (military), government (government), group (group);

(3) Compound Nouns: two or more nouns connected nouns formed together. Such as passerby (passerby), brother-in-law (brother-in-law);

(4) Material nouns (MaterialNouns): Indicates substances or substances that do not have a definite shape and size. Such as fire (fire), steel (steel), air (air), water (water), milk (milk);

(5) Abstract nouns (AbstractNouns): indicating action, state, quality or other abstraction. Such as labor (labor), health (health), life (life), friendship (friendship), patience (endurance).