A keyword is a word that, in combination with other keywords, can give a high-level description of the contents of a text document, allowing for the identification of its subject matter.
The recommended number of keywords is 5 to 7.
Please use common terms or indexed keywords which increases the probability of finding an article in databases and libraries. Keywords may include names of authors who are discussed in the article as well as references to geographic regions and historical periods.
Example:
Forms of life is a generally accepted term in philosophy of technology and language as well as cultural studies, it is an indexed keyword. Also: aphorisms, socio-technical systems.
Life-forms may intend the same meanin, but is an indexed word only in biology. See also: short remarks, societal aspects of technology.