Labelling

For example, a piece of music may be described as progressive rock or indie or ragga jungle drum and bass.

Labels should be written in a language that's familiar to the users, and in a way that they will detect new and recognize similar concepts.

A hierarchical relationship between headings is established visually through consistent use of numbering, font size, color and styles, white spaces, indentation, or a combination of these items.

When used in a navigation system there is no standard, but common categories might be: Index terms are often referred to as keywords, tags, descriptive metadata, taxonomies, controlled vocabularies, and thesauri.

Iconic labels are used as navigation systems, especially in mobile apps, where screen space is constrained.

Typically negatively; labelling it as ridiculous or despicable, though it can also go the other way round; attempting to gain sympathy for example by promoting the debater or position as authoritative, or by appealing to pity.

[4] Furthermore, he observed that it 'is conspicuous in ideological debate, in pseudoscience, and even in the early stages of science (protoscience).