diff --git a/core/modules/taxonomy/taxonomy.api.php b/core/modules/taxonomy/taxonomy.api.php
index d2f41f6..347c25a 100644
--- a/core/modules/taxonomy/taxonomy.api.php
+++ b/core/modules/taxonomy/taxonomy.api.php
@@ -22,8 +22,8 @@
  *   The vocabulary object.
  */
 function hook_taxonomy_vocabulary_create(\Drupal\taxonomy\Plugin\Core\Entity\Vocabulary $vocabulary) {
-  if (!isset($vocabulary->synonyms)) {
-    $vocabulary->synonyms = FALSE;
+  if (!isset($term->foo)) {
+    $term->foo = 'some_initial_value';
   }
 }
 
@@ -38,7 +38,7 @@ function hook_taxonomy_vocabulary_create(\Drupal\taxonomy\Plugin\Core\Entity\Voc
  */
 function hook_taxonomy_vocabulary_load(array $vocabularies) {
   foreach ($vocabularies as $vocabulary) {
-    $vocabulary->synonyms = variable_get('taxonomy_' . $vocabulary->id() . '_synonyms', FALSE);
+    $vocabulary->set('weight', $vocabulary->get('weight') * 10);
   }
 }
 
@@ -53,7 +53,7 @@ function hook_taxonomy_vocabulary_load(array $vocabularies) {
  *   A taxonomy vocabulary entity.
  */
 function hook_taxonomy_vocabulary_presave(Drupal\taxonomy\Plugin\Core\Entity\Vocabulary $vocabulary) {
-  $vocabulary->foo = 'bar';
+  $vocabulary->set('foo') = 'bar';
 }
 
 /**
@@ -66,9 +66,12 @@ function hook_taxonomy_vocabulary_presave(Drupal\taxonomy\Plugin\Core\Entity\Voc
  *   A taxonomy vocabulary entity.
  */
 function hook_taxonomy_vocabulary_insert(Drupal\taxonomy\Plugin\Core\Entity\Vocabulary $vocabulary) {
-  if ($vocabulary->synonyms) {
-    variable_set('taxonomy_' . $vocabulary->id() . '_synonyms', TRUE);
-  }
+  global $user;
+  watchdog(
+    'paper trail',
+    'Taxonomy vocabulary %name created by %user.',
+    array("%name" => $vocabulary->get('name'), "%user" => $user->get('name'))
+  );
 }
 
 /**
@@ -80,10 +83,12 @@ function hook_taxonomy_vocabulary_insert(Drupal\taxonomy\Plugin\Core\Entity\Voca
  *   A taxonomy vocabulary entity.
  */
 function hook_taxonomy_vocabulary_update(Drupal\taxonomy\Plugin\Core\Entity\Vocabulary $vocabulary) {
-  $status = $vocabulary->synonyms ? TRUE : FALSE;
-  if ($vocabulary->synonyms) {
-    variable_set('taxonomy_' . $vocabulary->id() . '_synonyms', $status);
-  }
+  global $user;
+  watchdog(
+    'paper trail',
+    'Taxonomy vocabulary %name updated by %user.',
+    array("%name" => $vocabulary->get('name'), "%user" => $user->get('name'))
+  );
 }
 
 /**
@@ -100,8 +105,9 @@ function hook_taxonomy_vocabulary_update(Drupal\taxonomy\Plugin\Core\Entity\Voca
  * @see taxonomy_vocabulary_delete()
  */
 function hook_taxonomy_vocabulary_predelete(Drupal\taxonomy\Plugin\Core\Entity\Vocabulary $vocabulary) {
-  if (variable_get('taxonomy_' . $vocabulary->id() . '_synonyms', FALSE)) {
-    variable_del('taxonomy_' . $vocabulary->id() . '_synonyms');
+  $id = config('foo.config')->get("vocabulary");
+  if($vocabulary->id() == $id) {
+    drupal_set_message(t("The %name vocabulary is used by the foo module. Until you set the vocabulary setting to a different vocabulary, the foo functionality will be disabled.", array("%name" => $vocabulary->get('name'))))
   }
 }
 
@@ -119,9 +125,12 @@ function hook_taxonomy_vocabulary_predelete(Drupal\taxonomy\Plugin\Core\Entity\V
  * @see taxonomy_vocabulary_delete()
  */
 function hook_taxonomy_vocabulary_delete(Drupal\taxonomy\Plugin\Core\Entity\Vocabulary $vocabulary) {
-  if (variable_get('taxonomy_' . $vocabulary->id() . '_synonyms', FALSE)) {
-    variable_del('taxonomy_' . $vocabulary->id() . '_synonyms');
-  }
+  global $user;
+  watchdog(
+    'paper trail',
+    'Taxonomy vocabulary %name deleted by %user.',
+    array("%name" => $vocabulary->get('name'), "%user" => $user->get('name'))
+  );
 }
 
 /**
@@ -185,17 +194,10 @@ function hook_taxonomy_term_presave(Drupal\taxonomy\Term $term) {
  *   A taxonomy term entity.
  */
 function hook_taxonomy_term_insert(Drupal\taxonomy\Term $term) {
-  if (!empty($term->synonyms)) {
-    foreach (explode ("\n", str_replace("\r", '', $term->synonyms)) as $synonym) {
-      if ($synonym) {
-        db_insert('taxonomy_term_synonym')
-        ->fields(array(
-          'tid' => $term->tid,
-          'name' => rtrim($synonym),
-        ))
-        ->execute();
-      }
-    }
+  $transalators = config('foo')->get('transalators');
+
+  foreach ($transalators as $user) {
+    drupal_mail('foo', 'term_transalation_needed', $user->mail, user_preferred_langcode($user), array("term" => $term));
   }
 }
 
@@ -208,18 +210,10 @@ function hook_taxonomy_term_insert(Drupal\taxonomy\Term $term) {
  *   A taxonomy term entity.
  */
 function hook_taxonomy_term_update(Drupal\taxonomy\Term $term) {
-  hook_taxonomy_term_delete($term);
-  if (!empty($term->synonyms)) {
-    foreach (explode ("\n", str_replace("\r", '', $term->synonyms)) as $synonym) {
-      if ($synonym) {
-        db_insert('taxonomy_term_synonym')
-        ->fields(array(
-          'tid' => $term->tid,
-          'name' => rtrim($synonym),
-        ))
-        ->execute();
-      }
-    }
+  $transalators = config('foo.config')->get('transalators');
+
+  foreach ($transalators as $user) {
+    drupal_mail('foo', 'term_transalation_needed', $user->mail, user_preferred_langcode($user), array("term" => $term));
   }
 }
 
@@ -236,7 +230,10 @@ function hook_taxonomy_term_update(Drupal\taxonomy\Term $term) {
  * @see taxonomy_term_delete()
  */
 function hook_taxonomy_term_predelete(Drupal\taxonomy\Term $term) {
-  db_delete('term_synoynm')->condition('tid', $term->tid)->execute();
+  $id = config('foo.config')->get("term");
+  if($term->id() == $id) {
+    drupal_set_message(t("The %name term is used by the foo module. Until you set the vocabulary setting to a different vocabulary, the foo functionality will be disabled.", array("%name" => $vocabulary->get('name'))))
+  }
 }
 
 /**