Category Relationship

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A specific item belongs to a broader category or class.

Category relationships (also called 'is-a' or taxonomic relationships) connect a specific example to its broader class. This hierarchical relationship is fundamental to how we organize knowledge. The first word names a specific instance; the second names the category it belongs to. Both pairs in the analogy must show the same level of specificity.

A ∈ B (A is a member of category B)

• dog : animal :: rose : flower
• piano : instrument :: hammer : tool
• tennis : sport :: jazz : music

How to recognize it

• Ask: 'Is A a type of B?' or 'A is a kind of B'
• The first word should be more specific than the second
• Both pairs should have the same hierarchical distance
• The category should be the immediate or natural grouping

Common mistakes

• Confusing with part-whole (a wheel is not a 'type of' car)
• Choosing categories at different levels of abstraction
• Missing that both pairs need the same relationship level

Practice guidance

Verbal Reasoning