Words that have the same meaning Synonyms are useful to increase retrieval when searching For instance; searching "dogs or canines" will find more materials than searching just "dogs"
Synonyms are other names for the same chemical For example, methanol and methyl hydrate are synonyms for methyl alcohol Synonyms may help in locating additional information on a chemical
One of two or more words or expressions of the same language that have the same or nearly the same meaning in some or all senses
words that mean the same or are similar to those in your search topic, e g car for automobile These may help find additional material on your topic Use synonyms, whenever possible, in your search strategy if your results are too few in number
A series of zero or more synonym elements giving members of the lexicon with similar meanings This, together with the following feature, enables the semantics of the members of the lexicon to be cross-linked as a system