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EAV Entity type in Magento 2

Magento 2 divides entity into 8 types as below:

customer – Entity Id = 1
customer_address – Entity Id = 2
catalog_category – Entity Id = 3
catalog – Entity Id = 4
order – Entity Id = 5
invoice – Entity Id = 6
creditmemo – Entity Id = 7
shipment – Entity Id = 8

(You can see in the eav_entity_type table)

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