Verbs

(v)classify, class, sort, assort, sort out, separatearrange or order by classes or categories“How would you classify these pottery shards — are they prehistoric?”
(v)classifydeclare unavailable, as for security reasons“Classify these documents”
(v)relegate, classifyassign to a class or kind“How should algae be classified?”, “People argue about how to relegate certain mushrooms”