The basic principle is the same. Fetch is normally reserved for toys and balls while retrieve is used for retrieving game. Same principles apply and fetch games are a predecessor to training a dog to retrieve game.
fetch boy fetch
retrieve
The word "fetch" has the synonyms retrieve, convey, or deliver.
fetch. grab. take.
Fetch, retrieve, bring.
Fetch means "go and bring back." Catch means "grab ball when thrown."
The order of the operations: --p means: decrement the variable, then fetch the new value p-- means: fetch the old value, then decrement the variable
fetch (to retrieve), retch (to vomit), sketch (to draw), stretch (to elongate), wretch (an unfortunate individual)
There are many synonyms for the word "retrieve". They are get back, bring back, fetch, recall, recapture, reclaim, recoup, recruit, redeem, regain, repair, rescue, restore, salvage, etc.
Downloading is when you fetch a file from another computer. Uploading is when you send a file to someone else.
Almost all dogs, regardless of breed, can be trained to fetch and retrieve. There are approximately 449 different (pure) dog breeds, and only several were breed with the intended purpose of retrieving.
http://www.greenspun.com/bboard/q-and-a-fetch-msg.tcl?msg_id=00ClSS