diff --git a/core/modules/migrate/src/Entity/Migration.php b/core/modules/migrate/src/Entity/Migration.php
index 8a9ec77..3143b62 100644
--- a/core/modules/migrate/src/Entity/Migration.php
+++ b/core/modules/migrate/src/Entity/Migration.php
@@ -410,23 +410,23 @@ public function setProcess(array $process) {
   /**
    * {@inheritdoc}
    */
-  public function setProcessOfProperty($field_name, $process_of_property) {
-    $this->process[$field_name] = $process_of_property;
+  public function setProcessOfProperty($property, $process_of_property) {
+    $this->process[$property] = $process_of_property;
     return $this;
   }
 
   /**
    * {@inheritdoc}
    */
-  public function mergeProcessOfProperty($field_name, array $process) {
+  public function mergeProcessOfProperty($property, array $process_of_property) {
     // If we already have a process value then merge the incoming process array
     //otherwise simply set it.
     $current_process = $this->getProcess();
-    if (isset($current_process[$field_name])) {
-      $this->process = NestedArray::mergeDeepArray([$current_process, $this->getProcessNormalized([$field_name => $process])], TRUE);
+    if (isset($current_process[$property])) {
+      $this->process = NestedArray::mergeDeepArray([$current_process, $this->getProcessNormalized([$property => $process_of_property])], TRUE);
     }
     else {
-      $this->setProcessOfProperty($field_name, $process);
+      $this->setProcessOfProperty($property, $process_of_property);
     }
 
     return $this;
diff --git a/core/modules/migrate/src/Entity/MigrationInterface.php b/core/modules/migrate/src/Entity/MigrationInterface.php
index a03f583..bce1854 100644
--- a/core/modules/migrate/src/Entity/MigrationInterface.php
+++ b/core/modules/migrate/src/Entity/MigrationInterface.php
@@ -180,7 +180,8 @@ public function setMigrationResult($result);
   public function getMigrationResult();
 
   /**
-   * Get the normalized process configuration describing the process plugins.
+   * Get the normalized process pipeline configuration describing the process
+   * plugins.
    *
    * The process configuration is always normalized. All shorthand processing
    * will be expanded into their full representations.
@@ -193,47 +194,49 @@ public function getMigrationResult();
   public function getProcess();
 
   /**
-   * Set the entire process configuration describing the process plugins.
+   * Allows you to override the entire process configuration.
    *
    * @param array $process
-   *   The configuration describing the process plugins.
+   *   The entire process pipeline configuration describing the process plugins.
    *
    * @return $this
    */
   public function setProcess(array $process);
 
   /**
-   * Set the process for an individual destination field.
+   * Set the process pipeline configuration for an individual destination field.
    *
-   * This method allows you to set the processing for an individual destination
-   * field within the full process configuration.
+   * This method allows you to set the process pipeline configuration for a
+   * single property within the full process pipeline configuration.
    *
-   * @param string $field_name
-   *   The field name of which to set the process.
+   * @param string $property
+   *   The property of which to set the process pipeline configuration.
    * @param mixed $process_of_property
-   *   A valid process value, array or string.
+   *   The process pipeline configuration to be set for this property.
    *
    * @return $this
    *   The migration entity.
    *
    * @see Drupal\migrate_drupal\Plugin\migrate\load\LoadEntity::processLinkField().
    */
-  public function setProcessOfProperty($field_name, $process_of_property);
+  public function setProcessOfProperty($property, $process_of_property);
 
   /**
-   * Merge the process arrays for an individual field.
+   * Merge the process pipeline configuration for a single property.
    *
-   * @param string $field_name
-   *   The field name of which to merge the process.
-   * @param array $process
-   *   An array of process data to be merged.
+   * @param string $property
+   *   The property of which to merge the passed in process pipeline
+   * configuration.
+   * @param array $process_of_property
+   *   The process pipeline configuration to be merged with the existing process
+   * pipeline configuration.
    *
    * @return $this
    *   The migration entity.
    *
    * @see Drupal\migrate_drupal\Plugin\migrate\load\LoadEntity::processLinkField().
    */
-  public function mergeProcessOfProperty($field_name, array $process);
+  public function mergeProcessOfProperty($property, array $process_of_property);
 
   /**
    * Get the current system of record of the migration.