Language

1. Method

1.1. Human communication

1.2. Spoken

1.3. Written

2. System

2.1. Communication

2.1.1. Particular country

2.1.2. Community

3. Types

3.1. Non-verbal

3.1.1. Body language

3.1.2. Sign language

3.2. Verbal

3.2.1. Speaking

4. Computing

4.1. System of symbols

4.2. Rules

4.3. Write

4.3.1. Programs

4.3.2. Algorithms