Types of search engine

There are various types of search engines, each is designed for specific purposes. Here are some types of search engines:

1. General Search Engines: It is a type of search engine that indexes and ranks web pages based on their content for a wide range of topics. Ex - Google, Yahoo, Bing.
2. Vertical Search Engine: It is a type of search engine that specializes in a particular type of content. These are often used to find specific types of information, such as images, videos, news, or product reviews. Ex - Google Images, YouTube, Amazon.
3. Hybrid Search Engine: It is a type of search engine that uses more than one search algorithm to find results. This means that the search engine can use different techniques to find the best results for a query.
4. Meta Search Engine: It is a type of search engine that aggregates results from multiple other search engines and presents them to the user in a single list. Metasearch engines are often used to compare results from different general-purpose or vertical search engines. Some popular metasearch engines include Dogpile and MetaCrawler. 
5. Web Search Engines: It is the most common type of search engine. They allow users to search for websites by keyword or phrase. The results of a web search are typically a list of websites that match the user’s query.
6. Image Search Engines: Image search engines allow users to search for images by keyword or phrase.
7. Video Search Engines: Video search engines allow users to search for videos by keyword or phrase.