Scanning:  Scanning is a reading technique used to find specific information quickly in a text without reading every word. It’s like looking for a keyword in a document.

Example

You're looking for a specific recipe in a cookbook. You scan the index for the keyword "lasagna" and then quickly flip through the pages to find the corresponding recipe.

Skimming: Skimming is a reading technique used to quickly gather the main ideas of a text without reading every word in detail. It involves glancing through headings, subheadings, introductory paragraphs, and key words to get a general sense of the content.

Example

You're trying to decide if an article is relevant to your research. You skim the title, headings, and a few sentences to get a sense of the main topic and determine if it's worth reading in more detail.