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+++ b/crm/overview.rst
@@ -7,3 +7,4 @@ Overview
 
    overview/started
    overview/process
+   overview/main_concepts
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diff --git a/crm/overview/main_concepts.rst b/crm/overview/main_concepts.rst
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@@ -0,0 +1,8 @@
+==============
+Main Concepts
+==============
+
+.. toctree::
+   :titlesonly:
+
+   main_concepts/terminologies.rst
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diff --git a/crm/overview/main_concepts/terminologies.rst b/crm/overview/main_concepts/terminologies.rst
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+======================
+Odoo CRM Terminologies
+======================
+
+-  **CRM (Customer relationship management)**: 
+        System for managing a
+        company's interactions with current and future customers. It
+        often involves using technology to organize, automate, and
+        synchronize sales, marketing, customer service, and technical
+        support.
+
+-  **Sales cycle** : 
+        Sequence of phases used by a company to convert a
+        prospect into a customer.
+
+-  **Pipeline :** 
+        Visual representation of your sales process, from the
+        first contact to the final sale. It refers to the process by
+        which you generate, qualify and close leads through your sales
+        cycle.
+
+-  **Sales stage** : 
+        In Odoo CRM, a stage defines where an opportunity
+        is in your sales cycle and its probability to close a sale.
+
+-  **Lead :** 
+        Someone who becomes aware of your company or someone who
+        you decide to pursue for a sale, even if they don’t know about
+        your company yet.
+
+-  **Opportunity :** 
+        A lead that has shown an interest in knowing more
+        about your products/services and therefore has been handed over
+        to a sales representative
+
+-  **Customer :** 
+        In Odoo CRM, a customer refers to any contact within
+        your database, whether it is a lead, an opportunity, a client or
+        a company.
+
+-  **Key Performance Indicator (KPI)** : 
+        A KPI is a measurable value
+        that demonstrates how effectively a company is achieving key
+        business objectives. Organizations use KPIs to evaluate their
+        success at reaching targets.
+
+-  **Lead scoring** : 
+        System assigning a positive or negative score to
+        prospects according to their web activity and personal
+        informations in order to determine whether they are "ready for
+        sales" or not.
+
+-  **Kanban view :** 
+        In Odoo, the Kanban view is a workflow
+        visualisation tool halfway between a `list
+        view <https://www.odoo.com/documentation/8.0/reference/views.html#reference-views-list>`__
+        and a non-editable `form
+        view <https://www.odoo.com/documentation/8.0/reference/views.html#reference-views-form>`__
+        and displaying records as "cards". Records may be grouped in
+        columns for use in workflow visualisation or manipulation (e.g.
+        tasks or work-progress management), or ungrouped (used simply to
+        visualize records).
+
+-  **List view :** 
+        View allowing you to see your objects (contacts,
+        companies, tasks, etc.) listed in a table.
+
+-  **Lead generation:** 
+        Process by which a company collects relevant
+        datas about potential customers in order to enable a relationship
+        and to push them further down the sales cycle.
+
+-  **Campaign:** 
+        Coordinated set of actions sent via various channels to
+        a target audience and whose goal is to generate leads. In Odoo
+        CRM, you can link a lead to the campaign which he comes from in
+        order to measure its efficiency.
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