different between preoperational vs taxonomy

English

pre- +? operational

preoperational (not comparable)

Prior to a surgical operation.
preoperational anxiety
In or relating to a Piagetian phase of child development characterized by sparse and logically inadequate mental operations and inability to reason or work with symbols.

Borrowed from French taxonomie. Surface analysis taxo- +? -nomy.

taxonomy (countable and uncountable, plural taxonomies)

The science or the technique used to make a classification.
A classification; especially, a classification in a hierarchical system.
(taxonomy, uncountable) The science of finding, describing, classifying and naming organisms.

taxonomics
(science of finding, describing, classifying and naming organisms): alpha taxonomy

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