In scientific nomenclature, a synonym is a scientific name that applies to a taxon that (now) goes by a different scientific name, although the term is used somewhat differently in the zoological code of nomenclature. For example, Linnaeus was the first to give a scientific name (under the currently used system of scientific nomenclature) to the Norway spruce, which he called "Pinus abies". This name is no longer in use: it is now a synonym of the current scientific name which is "Picea abies".

Unlike synonyms in other contexts, in taxonomy a synonym is not interchangeable with the name of which it is a synonym. In taxonomy, synonyms are not equals, but have a different status. For any taxon with a particular circumscription, position, and rank, only one scientific name is considered to be the correct one at any given time (this correct name is to be determined by applying the relevant code of nomenclature). A synonym cannot exist in isolation: it is always an alternative to a different scientific name. Given that the correct name of a taxon depends on the taxonomic viewpoint used (resulting in a particular circumscription, position and rank) a name that is one taxonomist's synonym may be another taxonomist's correct name (and "vice versa").

1. What is the current scientific name of the Norway Spruce?
2. Who gave it the original name?
3. What is the relationship between the two terms?
4. Is this type of synonym similar to other types of synonyms?
5. How is the correct synonym determined?
6. Is the correct name objective?
7. Can a synonym exist on its own?
8. Where is the Picea abies from?
9. Which scientific field does the article discuss?
10. When did Linnaeus name the Pinus abies?
1. Picea abies.
2. Pinus abies.
3. Synonyms.
4. No.
5. By applying the relevant code of nomenclature.
6. No.
7. No.
8. Norway.
9. Zoology.
10. unknown