diff --git a/DefeaturingTools-a.py b/DefeaturingTools-a.py
index 34a0d25..c735844 100644
--- a/DefeaturingTools-a.py
+++ b/DefeaturingTools-a.py
@@ -200,7 +200,7 @@ def setupUi(self, DockWidget):
         self.PB_right.setObjectName("PB_right")
         self.PB_makeEdge = QtGui.QPushButton(self.dockWidgetContents)
         self.PB_makeEdge.setGeometry(QtCore.QRect(12, 468, 32, 32))
-        self.PB_makeEdge.setToolTip("make Edge from selected Vertexes")
+        self.PB_makeEdge.setToolTip("make Edge from selected Vertices")
         self.PB_makeEdge.setText("")
         self.PB_makeEdge.setObjectName("PB_makeEdge")
         self.PB_expSTEP = QtGui.QPushButton(self.dockWidgetContents)
diff --git a/DefeaturingTools.py b/DefeaturingTools.py
index 864e9bc..b1d7872 100644
--- a/DefeaturingTools.py
+++ b/DefeaturingTools.py
@@ -1369,7 +1369,7 @@ def makeEdge_RH():
         except:
             i_sayerr("failed to create a Line")
     else:
-        i_sayerr("select only 2 Vertexes")
+        i_sayerr("select only 2 Vertices")
     for ob in FreeCAD.ActiveDocument.Objects:
         FreeCADGui.Selection.removeSelection(ob)
 ##
@@ -1999,7 +1999,7 @@ def setupUi(self, DockWidget):
         self.PB_right.setObjectName("PB_right")
         self.PB_makeEdge = QtGui.QPushButton(self.dockWidgetContents)
         self.PB_makeEdge.setGeometry(QtCore.QRect(12, 468, 32, 32))
-        self.PB_makeEdge.setToolTip("make Edge from selected Vertexes")
+        self.PB_makeEdge.setToolTip("make Edge from selected Vertices")
         self.PB_makeEdge.setText("")
         self.PB_makeEdge.setObjectName("PB_makeEdge")
         self.PB_expSTEP = QtGui.QPushButton(self.dockWidgetContents)
diff --git a/DefeaturingTools.ui b/DefeaturingTools.ui
index b1919d0..b33d31a 100644
--- a/DefeaturingTools.ui
+++ b/DefeaturingTools.ui
@@ -581,7 +581,7 @@ of the selected Objects</string>
      </rect>
     </property>
     <property name="toolTip">
-     <string notr="true">make Edge from selected Vertexes</string>
+     <string notr="true">make Edge from selected Vertices</string>
     </property>
     <property name="text">
      <string notr="true"/>
diff --git a/README.md b/README.md
index 01fba31..d09c7af 100644
--- a/README.md
+++ b/README.md
@@ -11,7 +11,7 @@ Intended for editing STEP models, removing/adding of selected features from the
 
 * Features a set of tools to edit a Shape or a STEP model, removing hole(s), face(s), simplifying the model, changing the tolerance, applying Fuzzy Boolean operations etc...
 * Tools to create more solid shape(s), from edge(s), face(s) or shell(s).
-* Possiblity using direct modeling of the model, when the history of operations is unavailable. (This is the case for 3D STEP models).
+* Possibility for using Direct Modeling of the model, when the history of operations is unavailable. (This is the case for 3D STEP models).
 * Useful in situations to quickly remove proprietary details of the model before sharing it. See [Defeaturing](https://wiki.freecadweb.org/Defeaturing)
 * More details at [wiki.freecadweb.org/Defeaturing_Workbench](https://wiki.freecadweb.org/Defeaturing_Workbench)