Scanning:

Scanning is a reading technique used to quickly locate specific information within a text. It's like searching for a particular word or phrase without reading the entire document.

Skimming:

Skimming is another reading technique that involves quickly going through a text to get a general understanding of its main points. It's like reading the headlines of a newspaper to get a sense of the most important news.

Examples of Scanning:

 * Looking for a specific phone number in a directory: You scan through the list of names, looking for the one you need without reading every entry.

 * Finding a particular recipe in a cookbook: You scan the index or table of contents to locate the recipe and then quickly skim through the instructions.

Examples of Skimming:

 * Previewing a chapter in a textbook before reading it in detail: You skim through the headings, subheadings, and the first few sentences of each paragraph to get a general idea of the content.

 * Reading a newspaper article to get the main points: You skim through the article, focusing on the introduction, key points, and conclusion.

Both scanning and skimming are useful techniques for efficient reading, especially when you need to quickly find information or get a general overview of a text.