diff --git a/dev/demo/all.html b/dev/demo/all.html
index 8417903..bd7461c 100644
--- a/dev/demo/all.html
+++ b/dev/demo/all.html
@@ -37,12 +37,12 @@
 	  <!-- <i class="fa fa-arrow-circle-down show-hint" onclick="hint.popUp()"></i> -->
 	</div>
 
-        <!-- Search in the following virtual collection -->
+        <!-- Search in the following virtual corpus -->
         <div id="vc-view"></div>
         in
         <input id="show" name="show" type="hidden" />
         <!--<input id="collection-name" name="collection-name" type="hidden"> -->
-        <input id="collection" name="collection" type="text" value="">
+        <input id="cq" name="cq" type="text" value="">
 	with <span class="menu select">
 	  <select name="ql" id="ql-field">
 	    <option value="poliqarp">Poliqarp</option>
@@ -111,7 +111,7 @@
 
 KorAP.koralQuery = {
   "matches":["..."],
-        "collection":{
+        "corpus":{
         "@type": "koral:docGroup",
         "operation": "operation:or", "operands": [{
       "@type": "koral:docGroup",
diff --git a/dev/demo/alldemo.js b/dev/demo/alldemo.js
index 6f9f60b..108bfe6 100644
--- a/dev/demo/alldemo.js
+++ b/dev/demo/alldemo.js
@@ -774,7 +774,7 @@
 require(['app/en', 'init', 'hint/foundries/cnx'], function (lang) {
   KorAP.hintArray = hintArray;
 
-  // Set current virtual collection
+  // Set current virtual corpus
   // KorAP.currentVC = vcExample;
 
   // Parse and show the table
diff --git a/dev/demo/sidebar-login.html b/dev/demo/sidebar-login.html
index eb2f429..2b127f1 100644
--- a/dev/demo/sidebar-login.html
+++ b/dev/demo/sidebar-login.html
@@ -54,12 +54,12 @@
 	  <!-- <i class="fa fa-arrow-circle-down show-hint" onclick="hint.popUp()"></i> -->
 	</div>
 
-        <!-- Search in the following virtual collection -->
+        <!-- Search in the following virtual corpus -->
         <div id="vc-view"></div>
         in
         <input id="show" name="show" type="hidden" />
-        <input id="collection-name" name="collection-name" type="hidden">
-        <input id="collection" name="collection" type="text" value="">
+        <!--<input id="collection-name" name="collection-name" type="hidden"> -->
+        <input id="cq" name="cq" type="text" value="">
 	with <span class="menu select">
 	  <select name="ql" id="ql-field">
 	    <option value="poliqarp">Poliqarp</option>
diff --git a/dev/demo/vcdemo.js b/dev/demo/vcdemo.js
index e0b9f16..75c7cf1 100644
--- a/dev/demo/vcdemo.js
+++ b/dev/demo/vcdemo.js
@@ -67,7 +67,7 @@
   ]
 };
 
-var collections = [
+var corpora = [
   {
     "statistics":{
       "paragraphs":2034752,
@@ -120,7 +120,7 @@
 
   domReady(function() {
 
-    // Create a new virtual collection by passing a based json object and
+    // Create a new virtual corpus by passing a based json object and
     // field menu information
     KorAP.vc = vcClass.create([
       ['title', 'string'],