terminology - do specialst fields have their own colloquial vocabulary not shared by laymen?



I saw the following passage in a PSAT study guide. One of the questions is about the use of the term 'hot spot'. Can we say it's being used colloquially and technically at the same time? The question amounts to whether colloquial language is necessarily a part of laymen's terms.


Geologists call these volcanic areas hot spots. Lying deep in the interior of a plate, hot spots or intra-plate volcanoes are sources of magma, the red-hot, molten material within the earth's crust.




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