A family of Microsoft word processing software products for creating web, email, and print documents.
Just to correct a minor thing Bob said, it is possible to have specially configured TIF files that contain multiple pictures. Some copy machines and other devices do this using proprietary offshoots of the file format.
Word will display only the first picture of a multi-image TIF file. If you right-click on an inserted image of a TIF file in Word, you can choose Save As Picture and choose a different file format for the saved image (just the first one). As Bob said, using Word as a picture handling program in this situation is cumbersome and is not something Word was designed to do.
As to software that can handle multi-image TIF files, I recommend looking into GraphicConverter, Gimp and PhotoShop and pick the one that fits your budget and has the feature set you want.