1. The Front End is the stuff that you see and interact with: HTML, CSS , and JS.

2. The Back End is everything else: so many choices!

3. Restaurant Analogy: The back end is everything that happens in the kitchen; the front end is what is plated and sent to your table.

HTML:

• Hyper Text Markup Language
• Defines the structure of a webpage
• Example: "put an image here" , "put a form here"
• HTML is known as the "nouns" of a webpage

CSS:

• Cascading Style Sheets
• Defines the style of HTML
• Example:  "make all text purple" , "give the first image a yellow border"
• CSS is known as the "adjectives" of a webpage

JavaScript:

• Adds logic and interactivity to a page
• Example: "Do some math" , "Change color when the user clicks"  and "Load new data from twitter"  
• JavaScript is known as the actions or "verbs" of a webpage