What is difference between spider,robots and Crawlers? and how does it works?

[stevesmith824]

Hello Everyone,

can anyone let me know difference between spider,robots and crawlers and how it does works?

[schwa]

Let me show you an example. One of my friends' name is Andy, but his parents call him little dog, his friends call him JB, so Andy, little dog and actually is the same person.

[RH-Calvin]

All the same with different names for search engine bots. They have the same function but are called differently.