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Magento 2: How to Get all categories name?

To get all categories name of your magento 2 store, use following code:
$_objectManager = \Magento\Framework\App\ObjectManager::getInstance();
$categoryCollection = $_objectManager->get('\Magento\Catalog\Model\ResourceModel\Category\CollectionFactory');
$categories = $categoryCollection->create()->addAttributeToSelect('*');
foreach ($categories as $category) {
   echo $category->getName()."<br/>";
}
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