Categorizer

Part of speech: noun

Definitions

1. A tool or individual that sorts and organizes data or items into distinct categories based on specific criteria or characteristics
2. An entity or mechanism responsible for classifying information or objects by their shared features or classifications
3. An apparatus or person used to separate items or information into different groups following certain rules

Etymology: "Categorizer" is about as plain as English word-building gets: it is the verb "categorize" with the agent suffix "-er" attached, so it names whoever or whatever performs the act of categorizing. The verb itself traces back through "category," which comes from Greek "katēgoria," a term used in logic for a basic kind of predicate or assertion, and from there to a sense of accusation or charge, since the Greek root involved public speaking against someone. The English verb "categorize" was formed from the noun, and the agent form followed the usual pattern for turning verbs into doers, as in "writer," "reader," or "sorter." Because the suffix is productive and the base is well established, the word needs no special story; its meaning follows directly from the parts. Its use is largest in fields such as computing, statistics, and library science, where software or researchers routinely assign items to classes.

Synonyms: classifier, sorter, organizer, arranger, grouping agent

Antonyms: unclassifiable, disorganizer, scatterer, dissolver, declassifier