diff --git a/src/NodaTagRelationIdentifier.php b/src/NodaTagRelationIdentifier.php
index 491d7a4..fbaa7dc 100644
--- a/src/NodaTagRelationIdentifier.php
+++ b/src/NodaTagRelationIdentifier.php
@@ -17,6 +17,14 @@ final class NodaTagRelationIdentifier {
             ' (Motiv)' => MDTagRelationType::display_subject,
             ' [Motiv]' => MDTagRelationType::display_subject,
             ' <Motiv>' => MDTagRelationType::display_subject,
+
+            ' (Material)' => MDTagRelationType::material,
+            ' [Material]' => MDTagRelationType::material,
+            ' <Material>' => MDTagRelationType::material,
+
+            ' (Technik)' => MDTagRelationType::technique,
+            ' [Technik]' => MDTagRelationType::technique,
+            ' <Technik>' => MDTagRelationType::technique,
         ]
     ];