What is the difference between a search engine and a gateway?

A. A search engine uses machines to index webpages; a gateway is compiled by experts or librarians.
B. A search engine searches for images; a gateway searches for text only.
C. A search engine is simpler to use; a gateway requires the searcher to use scientific terms.
D. A search engine is free; a gateway requires payment for the subscription to the service.

Q&A Education