The difference between an AutoCorrect entry and a building block is that the building block feature makes corrections automatically as soon as the SPACEBAR or a punctuation key is pressed,whereas the F3 key must be pressed or the AutoCorrect command clicked to instruct Word to make an AutoCorrect correction.

AutoCorrect Entry

A feature in word processing and email programs that automatically corrects common typographical errors or misspellings as the user types.

Building Block

Pre-designed document parts, such as headers, footers, or text boxes, that can be reused to create documents quickly in word processing software.

Spacebar

The long horizontal key on a keyboard that is used to create spaces between words or characters during typing.