Search terms are the words you type into a search box when using a search tool.
A search term is any word that you use in searching information. It can be a natural language word or so called subject term found in a database.
When you search for information, these keywords are those that identify and describe the contents of items (articles, books etc.). In database keywords can be found e.g. from the title, abstract, author, text, etc.
The concept itself is the first, obvious search term, but usually it is not the only one.
Ways to discover corresponding search terms for the concepts:
- Can your term be spelt in different ways?
- Example: dynamical system – dynamic system
- Is there common abbreviations or acronyms?
- Example: FTIR = Fourier-transform infrared spectroscopy
- Expand your list by thinking of synonyms, related terms and phrases.
- Example: global warming – climate change.
- Think broader and narrower terms as well. Which word narrow down your topic? What is the broader context?
- Example: remote sensing – aerial photography
Have you already found some useful articles? Read the abstracts and browse the reference lists. Check also the keywords in the titles and the words at the subject or descriptor field.
Searching is an iterative process. There is not just one way to conduct a search. You may notice that the search terms you have initially chosen are not the best and you have to modify and re-run the search using different terms.
Subject terms (Subject headings)
A subject term is a standardized word or phrase that describes a main idea in the article or in the book. Standardization means that the term is concluded in a controlled vocabulary called thesaurus. Thesaurus is list of terms used for a certain concept.
What if you cannot find a subject term(s) for your topic? – In that case, you just have to use natural language words.
Not every disciplines/databases have controlled vocabulary or thesaurus. Some database use the author’s own keywords (the words that author used to describing the article).
Especially very specific or a new subject do not have yet a Subject Term.
Watch the video Subject headings vs keywords (1:55) by Wellington Medical and Health Sciences Library (the link in the picture takes to YouTube):