classification (n.)

• appraisal
• assessment
• biosystematics
• biosystematy
• categorization
• class
• evaluation
• factoring
• family
• genus
• grouping
• identification
• kingdom
• nomenclature
• onomastics
• order
• phylum
• sifting
• sorting
• species
• systematics
• taxonomy
• terminology
• toponymy
• weighing
• winnowing