Difference between keyword & keyword phrase?

Hello Friends,

I want to know that Difference between keyword & keyword phrase? tell me guys..

keyword:
When you look for something in a search engine, you describe it in words and type them into search field. The search engine matches those words with the words on various websites that are included in its index. And then it gives you the most relevant results (websites that best match the words you typed). In search marketing, these words are called keywords.

Keyword Phrase:
Combination of those keywords is called key phrase.