Add Getting Started > Basics documentation (redhat-developer#4914)

* Add Getting Started > Basics documentation

* Better structure the doc

* Changes

* Fix content

* Remove K8s content

* Simplify the doc

* Cosmetic changes

* Fix grammar

website/docs/getting-started/basics.md

@@ -4,19 +4,34 @@ sidebar_position: 3
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 # odo concepts
 
-odo abstracts Kubernetes concepts into developer focussed terminology. In this document, we will take a look at each of these concepts and also their Kubernetes equivalent.
+odo abstracts Kubernetes concepts into a developer friendly terminology; in this document, we will take a look at these terminologies.
 
-### Concepts
+#### Application
+  An application in odo is a classic application developed with a [cloud-native approach](https://www.redhat.com/en/topics/cloud-native-apps) that is used to perform a particular task.
+
+  Examples of applications: Online Video Streaming, Hotel Reservation System, Online Shopping.
 
 #### Component
-* Application
-* Project
-* Context
-* URL
-* Storage
-* Service
-* Devfile
+  In the cloud-native architecture, an application is a collection of small, independent, and loosely coupled components; an odo component is one of these components.
 
-### Component vs. Application
+  Examples of components: API Backend, Web Frontend, Payment Backend.
 
-### odo services vs. Kubernetes services
+#### Project
+  A project helps achieve multi-tenancy: several applications can be run in the same cluster by different teams in different projects.
+
+#### Context
+  A context is the directory on the system that contains the source code, tests, libraries and odo specific config files for a single component.
+
+#### URL
+  A URL exposes a component to be accessed from outside the cluster.
+
+#### Storage
+  A storage is a persistent storage in the cluster: it persists the data across restarts and rebuilds of a component.
+
+#### Service  
+  A service is an external application that a component can connect to or depend on to gain an additional functionality.
+
+  Example of services: MySQL, Redis.
+
+#### Devfile 
+  A devfile is a portable YAML file containing the definition of a component and its related URLs, storages and services. See [Devfile](../architecture/devfile.md) to know more about devfile.

website/docs/getting-started/installation.md

@@ -1,4 +1,4 @@
 ---
 title: Installation
 sidebar_position: 4
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+---